Competent 20 Oz Copper PCB Manufacturer in China

Our cost-effective circuit boards are just as good as expensive brands out there. PCBMay fabricates all sorts of 20 Oz Copper PCB for your commercial application.

  • 3000+ happy, satisfied customers all over the world
  • 24/7 customer service at your fingertips
  • Offer Certificate of Conformity report upon request
  • All products pass IPC Class 2 or 3
  • RoHS certification competed
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The First Name in 20 Oz Copper PCB—PCBMAY

Do you believe in getting the most from your money? Then 20 Oz Copper PCB made by PCBMay is the answer.

After more than 12 years in the competitive circuit board industry, we have built competence in our PCB manufacturing process.

Leverage our strength to build your brand. We welcome all types of Custom PCB, Zero PCB, and Prototype PCB as requested.

Contact our sales staff for your 20 Oz Copper PCB order now!

Types of 20 Oz Copper PCBBuilt for You

Multilayer PCB Diodes

Dynamically capable of handling High Power needs, our Multilayer 20 Oz Copper PCB withstands heavy duty use. These boards are deployed in Military and Telecommunication sectors, hence, need to be fully functional pieces.

HASL 20 Oz Copper PCB

The HASL 20 Oz Copper PCB fits customers who need Heavy Copper PCBs but are on limited budget. With Hot Air Soldering, the copper layer is thoroughly protected from corrosion with lead or tin.

ENIG 20 Oz Copper PCB

With the use of ENIG 20 Oz Copper PCB, customers from Europe comply with Lead-free PCB guidelines and regulations. ENIG PCB can be pricey, but its supreme flat surface is well-recognized.

OSP 20 Oz Copper PCB

PCBMay’s Entek or OSP 20 Oz Copper PCB also helps customers fulfill lead-free requirements, but OSP PCB is less expensive than Hard Gold PCB. OSP has a shorter product life span, however.

HDI 20 Oz Copper PCB

HDI 20 Oz Copper PCB create a lot of possibilities for electronics design. We drill our HDI PCB with mechanical drills or laser drills. Buried Via and Blind Via are produced either way.

Immersion Gold 20 Oz Copper PCB

Since Immersion Gold 20 Oz Copper PCB has been invented, Fine Pitch PCBs became easier to produce. Gold surface finish is popular, especially in automotive applications.

The Very Best Facilities for Your 20 Oz Copper PCB

We have what it takes to provide the 20 Oz Copper PCB you wish for. As a veteran in China’s PCB industry, we have perfected the manufacture of this type of board.

As a versatile PCB fabricator and PCBA specialist, our facilities are advanced. We showcase them to you now in this brief video. Here, you can see how clean and organized our process is for making your 20 Oz Copper PCB.

When we deliver one to your destination, you can be sure of top-class quality.

VPC Plating Line

Related 20 Oz Copper PCB

Kingboard PCB
The most well-known company for Copper Clad Laminates is Kingboard. We offer Kingboard PCBs in PCBMay.
Large PCB
Large PCB
Large PCB is a PCB that is used as a backplane. We customize for extra length.
Laser Cut PCB
Laser Cut PCB
The Laser Cut PCB is classified Panelized PCBs that are separated using UV laser processing tools.
A considerable number of customers procure LCD PCBs for displays, even if there is OLED technology.
Lead-Free PCB
Our Lead-Free PCB can be Gold or Silver or OSP surface finish PCBs depending on request.
Load Board PCB
Load Board PCB
Producing Load Board PCBs is part of the prototyping process of new devices. We accommodate it.
Long PCB
Long PCB
Our Long PCB one that is longer than 1200mm. Adjustments need to be made for SMT.
Medical PCB
Medical PCB
Considered advanced applications, Medical PCBs can use transparent PCB material and very small components, e.g. ICs.

20 Oz Copper PCB Production Details As Following Up

Brown Oxide
PTH Line
VCP Plating   AOI  Exposure E-Test
Layer Count1-40layers
Base MaterialKBShengyiShengyiSF305FR408FR408HRIS410FR406GETEK370HRIT180ARogers4350BRogers4000PTFE Laminates(Rogers seriesTaconic seriesArlon seriesNelco series)Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)
Board TypeBackplane、HDI、High multi-layer 、blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.
Board Thickness0.2-5.0mm
Copper ThicknessMin. 1/2 OZ, Max. 10 OZ
PTH Wall25um(1mil)
Maximum Board Size1100*500mm(43”*19”)
Min laser drilling size4mil
Min. Spacing/Tracing2.7mil/2.7mil
Solder MaskGreen, Black, Blue, Red, White, Yellow,Purple matte/glossy
Surface TreatmentFlash gold(electroplated gold)ENIGHard goldFlash goldHASL Lead freeOSPENEPIGSoft goldImmersion silverImmersion TinENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finger.
Min. Annular Ring3mil
Aspect ratio10:1(HASL Lead freeHASL LeadENIGImmersion TinImmersion silverENEPIG);8:1(OSP)
Impedance control±5ohm(<50ohm), ±10%(≥50ohm)
Other TechniquesBlind/Buried Via
Gold Fingers
Press Fit
Via in Pad
Electrical Test

Here there’re many laminate material datasheets, they’re useful and helpful for you, please see them:

TU-872Modified EpoxyDOWNLOAD2003403.8-4.03.8
RO 3010Cer/PTFEDOWNLOAD50010.2
RO 4003Hydrocarbon/CerDOWNLOAD>2804253.38
RO 4350BHydrocarbon/CerDOWNLOAD>2803903.48
RT/duroid 5880PTFE/GlassDOWNLOAD5002.2
ISOLAPolyclad 370HRFR4DOWNLOAD1703404.8-5.1
HitachiMCL-BE- 67GModified EpoxyDOWNLOAD1403404.94.4
MCL-LX-67YSpecial LaminateDOWNLOAD185-195325-3453.4-3.6
NelcoN4000-13Modified EpoxyDOWNLOAD210-2403653.73.6
N4000-13EPModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13SIModified EpoxyDOWNLOAD210-2403503.43.2
N4000-13EP SIModified EpoxyDOWNLOAD210-2403503.43.2
ArlonArlon 25NCerDOWNLOAD2603.38
Arlon 25FRCerDOWNLOAD2603.58
Arlon 33NPolymideDOWNLOAD>2503534
Arlon 35NPolymideDOWNLOAD>2503634.2
Arlon 85NPolymideDOWNLOAD2503874.2
StablcorST325DOWNLOADThermal conductivity:75w/m.k(with 1oz copper)
ST10DOWNLOADThermal conductivity:325w/m.k(with 1oz copper)
Bergquistht-04503DOWNLOADThermal conductivity:2.2w/m.k(with 1oz copper)


PCBMay offers flexible shipping methods for our customers, you may choose from one of the methods below.

1. DHL

DHL offers international express services in over 220 countries.
DHL partners with PCBMay and offers very competitive rates to customers of PCBMay.
It normally takes 3-7 business days for the package to be delivered around the world.

DHL Forwarder

2. UPS

UPS gets the facts and figures about the world’s largest package delivery company and one of the leading global providers of specialized transportation and logistics services.
It normally takes 3-7 business days to deliver a package to most of the addresses in the world.

UPS Forwarder

3. TNT

TNT has 56,000 employees in 61 countries.
It takes 4-9 business days to deliver the packages to the hands
of our customers.

TNT Forwarder

4. FedEx

FedEx offers delivery solutions for customers around the world.
It takes 4-7 business days to deliver the packages to the hands
of our customers.

Fedex Forwarder

5. Air, Sea/Air, and Sea

If your order is of large volume with PCBMay, you can also choose
to ship via air, sea/air combined, and sea when necessary.
Please contact your sales representative for shipping solutions.

Note: if you need others, please contact your sales representative for shipping solutions.

On our website you can use the following payment methods:

Telegraphic Transfer(TT): A telegraphic transfer (TT) is an electronic method of transferring funds utilized primarily for overseas wire transactions. It’s very convenient to transfer.

Bank/Wire transfer: To pay by wire transfer using your bank account, you need to visit your nearest bank branch with the wire transfer information. Your payment will be completed 3-5 business days after you have finished the money transfer.

Paypal: Pay easily, fast and secure with PayPal. many other credit and debit cards via PayPal.

Credit Card: You can pay with credit card: Visa, Visa Electron, MasterCard, Maestro.

    Excel with 20 Oz Copper PCB from PCBMAY

    High-density interconnects and high-speed demands in circuit boards are here to stay. To adapt to these requirements, you need PCBMay’s 20 Oz Copper PCB as a component for your devices.

    At PCBMay, we recognize the importance of product design for this sophisticated type of PCB. Our in-house expert engineers will receive your PCB schematic and drawings, analyze the information, and assist you with whatever you need. Because we value your input, any Engineering (EQ) questions about your 20 Oz Copper PCB will be answered quickly (1-2 hours).

    In fact, we are very transparent with our PCB manufacturing process. If you want to have a full CAM report, that can be easily arranged. As well, we will facilitate third-party audits to ensure your PCBs are up to the highest standards. We do not want you to worry about faults or defects. You want peace of mind when your 20 Oz Copper PCB arrives at your doorstep, and this, we will provide.

    About environmental care, you are protected with our international certifications. As a responsible manufacturer in the electronics sector, we provide lead-free and mercury-free PCB products. When we ship to European customers, for example, our 20 Oz Copper PCB unquestionably follows the EU directive on the Restriction of Hazardous Substances (RoHS).

    As you see, we can handle all types of PCB orders. Do you have any PCB needs other than our 20 Oz Copper PCB needs? Then, contact PCBMay now!

    20 Oz Copper PCB: Ultimate FAQ Guide

    Are you searching for a high-quality 20 Oz Copper PCB?

    20 Oz Copper PCB is utilized for high-speed and high-frequency applications. Consequently, the PCB must be durable.

    It is difficult for a manufacturer to maintain such high levels of quality.

    PCBMay can be your one-stop solution. We are producing 20 Oz Copper PCBs with the utmost attention to detail.

    We hope that this FAQ guide will answer any questions regarding this kind of PCB and share our experiences with you.

    What Is 20 Oz Copper PCB?

    20 Oz Copper PCB are produced 20 ounces of copper metal per layer. 20 oz Copper PCBs are typically utilized in commercial items.

    20 Oz Copper PCBs are commonly used in electrical & electronics circuits where large power transfer is required. Moreover, the thermal strength given by these PCBs is excellent.

    Copper Weight is the quantity of copper (measured in ounces) contained in one sq foot of surface area. It is shown by this parameter how thick the copper is on the layer as a whole.

    The temperature range is critical in many applications, particularly electronic components. Heat damages sensitive electrical parts and harms the operation of electronic circuits. This is where the 20 oz Copper PCB distinguishes itself from the rest of the board.

    20 Oz Copper PCB

    20 Oz Copper PCB

    What Are The Features Of 20 Oz Copper PCB?

    The 20 Oz Copper PCB is distinguished from several distinguishing characteristics by the remainder of the PCB. They can withstand higher temperatures and can be utilized in more demanding applications.

    The following are some of the characteristics of 20 Oz Copper printed circuit boards:

    Base material: FR4

    Min. Core thickness: 4mil/0.1mm

    Max board size: 24.41X47.24inch/620X1200mm

    Min. Base copper: 1/3Oz

    Max. Base copper: 10Oz

    Finish: ENIG

    FR4 Material

    FR4 Material

    What Are The Differences Between A Regular PCB And A 20 Oz Copper PCB?

    A 20 Oz Copper PCB is significantly different from a conventional PCB. The following comparison might help you decide which one to choose if you are confused.

    • Copper etching, as well as plating, is used to make standard PCBs. These PCBs’ traces, PTHs, planes, and pads are coated to increase their copper thickness.
    • Only 1 oz copper is needed to produce standard PCBs. On the other hand, 20 Oz PCB, also known as heavy copper PCB, has a copper concentration of 20 ounces each layer.
    • 20 Oz copper is better suited for heavy-duty tasks than standard PCBs.
    • 20 Oz copper circuits conduct more current than standard copper PCBs.
    • High-end applications benefit from thick copper PCBs because of their excellent heat dispersion.
    • The mechanical strength of heavy copper PCBs is superior to that of conventional PCBs. You can get an increase in performance by using thick copper circuit boards.

    Regular PCB Vs. 20 Oz Copper PCB

    Regular PCB Vs. 20 Oz Copper PCB

    What Is The Production Process Of Double-Sided 20 Oz Copper PCB?

    The manufacturing procedure for 20 Oz Copper double-sided PCBs is relatively complicated. You have to keep a few things in mind before going on. In this part, we will look at the manufacturing process for the 20 Oz Copper PCB, which includes the following steps:

    • Cut the sheet in half to retrieve the internal structure board.
    • A design for the inner layer is created on each internal structure board.
    • The prepreg pushes together the internal board and the outermost section of copper foil to create a multi-layer board out of the two layers of material.
    • Using current technology, post-process the multi-layer circuit to create a copper board.

    These approaches also guarantee that copper is distributed uniformly across each layer.

    Double-Sided PCB

    Double-Sided PCB

    What Are Different Copper Thicknesses Used In PCB Manufacturing?

    Copper is a critical component of a printed circuit board. Copper has the advantage of being very conductive, which is why it is used in PCBs. This implies that it can readily convey signals without causing any power to be lost in the process. It also means that producers will not utilize as much copper as otherwise.

    The amount of current passing typically determines the copper thickness of a printed circuit board through it. Copper thicknesses ranging from 1.4 mm to 2.8 mm (for inner layers) and weights ranging from 2 oz3 oz are average (including the outer layers).

    The thickness may be customized to meet your specific needs. Bear in mind that more significant copper equals a higher price as well as more difficult extraction and processing. So that’s why 20 Oz Copper PCBs have such excellent performance and command such a high price.

    PCB Copper Thickness

    PCB Copper Thickness

    What Is The Current Carrying Capacity Of 20 Oz PCB?

    Copper traces etched onto the surface of a PCB convey electricity. You can increase the current load capacity by widening copper traces, although this is not usually possible.

    Other than increasing the copper trace width, using ’20 Oz Copper PCBs’ can boost the current-carrying capability without altering the copper trace width.

    A typical 20 Oz Copper PCB can transfer around 50-60 amps current. Use a PCB weight calculator to measure your PCB current according to the copper weight.

    I=0.048* T(0.44)* (W*Th)0.725   

    Where T= the rise in temperature.

    Th = Copper trace thickness in mils

    W = copper trace width in mils

    I = current

    The ultimate 20 Oz Copper PCB has a copper trace that conducts current. As per the formula for power loss, the current will disperse heat. Defined like this: Losses increase proportionally to trace resistance. To reduce heat dissipation, the trace should be broader and thicker.

    By transferring the heat created by the trace to the surrounding components through “Heat Conduction” and the residual heat through “Heat Convection,” the trace eventually cools down. It is possible to disperse heat created into the atmosphere by various methods.

    As a result of heating elements, cooling fans, blind vias, and PTH, heat may be readily transferred to thermal pads and subsequently dissipated in the air via heat sink fins. To maintain the long-term viability of a PCB, heat management must be taken into account throughout the design process.

    PCB Current Carrying Capacity

    PCB Current Carrying Capacity

    Which Surface Finish Goes Into 20 Oz Copper PCB?

    Copper must be protected from oxidation for high-level application performance by a PCB surface finish of 20 Oz Copper. A smooth surface finish is required for a reliable connection between the printed circuit board and the electrical component.

    Surface treatments such as HASL and ENIG are used on 20 Oz copper printed circuit boards to ensure maximum performance. You will learn all you need to know about HASL and ENIG surface finish in this section.

    PCB Surface Finish

    PCB Surface Finish


    Hot Air Solder Leveling (HASL) is a famous industrial finish. There are two forms of HASL: tin containing lead and tin lacking lead. HASL is one of the most affordable PCB surface treatments. This surface treatment is widely accessible and inexpensive.

    A board is dipped in molten solder to make HASL.

    The solder contact and storing stability of HASL are excellent. Surface planarity may not even be appropriate for fine-pitch parts due to the thickness of the HASL covering.

    HASL may work effectively with through-hole components. The HASL technique exposes the PCB to heat up to 265°C, identifying possible delamination concerns long before pricey components are mounted to the board.


    ENIG comprises two parts of a metallic surface formed on the metal substrate using a chemical process.

    The nickel layer shields the copper from corrosion, while the gold layer shields the nickel coating from oxidative stress.

    This significantly improves corrosion resistance while preserving a smooth surface, critical for installing leadless parts and other components. Because of the responsibility for lead-free laws, the use of ENIG has grown more popular.

    What Are The Applications Of 20 Oz Copper PCB?

    Among the many advantages of 20 Oz Copper PCB are its excellent characteristics. Aerospace and military industries often make use of this PCB type. Over time, the need for 20 Oz Copper PCBs has grown. These PCBs are utilized in a variety of applications, including;

    PCB Application

    PCB Application

    What Are The Design Issues Of 20 Oz Copper PCB In Aerospace Applications?

    Traditional aerospace and military PCB design involve paralleling layers of 20 Oz copper and hoping that the layers divide the current equally.

    In actuality, the load distribution is less than perfect, and specific layers tend to bear a more significant proportion of the weight and create more losses than others. In general, the board operates at a higher temperature than was anticipated throughout the design process.

    It is now possible to determine the temperature increase caused by losses in the boards with better accuracy. Failures connected with thermal stress are significantly reduced because of the thick copper plating inside the holes. The result is a PCB that runs more relaxed and is more dependable.

    Aerospace PCB

    Aerospace PCB

    Does 20 Oz Copper PCB Handle Temperature And Strength Better Than Regular PCB?

    Copper PCBs weighing 20 Oz of copper are commonly utilized in industrial electronic power systems. This unusual copper PCB has a final copper value of 20 ounces, contrasted to 1-ounce copper or 2 ounces in standard PCB.

    PCB Heat Management

    PCB Heat Management

    20 Oz Copper PCBs are thicker, allowing for greater current flow, better heat dispersion, and more complicated switches in a small area. Others include the ability to employ unusual materials with maximal capacity and the lowest danger of circuit failure.

    This video explains PCB heat management.



    How Many Layers Can 20 Oz Copper PCB Have?

    Multi-layer printed circuit boards (PCBs) are frequently utilized in various devices because of their flexibility. Multiple circuits and wiring may be accommodated on a circuit board with more layers, handling more complex applications. For instance, since mobile phones are very complicated gadgets, printed circuit boards might include as many as twelve layers.

    A 20 Oz Copper PCB might contain anything from one to thirty layers. These layers are responsible for ensuring that they operate at peak performance. The greater the number of layers, the higher its performance.

    Multilayer PCB

    Multilayer PCB

    How Can You Calculate PCB Thickness?

    Copper thickness is crucial in obtaining the conventional PCB thickness for a PCB’s operation and application. Its weight is generally expressed in ounces (oz). It is accomplished by uniformly distributing an ounce of copper across a square foot surface, resulting in a thickness of 1.37 mils.

    20 Oz  Copper is used to produce printed circuit boards (PCBs). Manufacturers also use it to estimate the thickness of a design whenever the architect does not provide particular specifications.

    For currents that need more than 1 Oz of copper, a producer might increase the copper weight or the trace width. Copper’s price has risen, although this is largely due to the more difficult and time-consuming nature of refining heavy copper.

    To get the thickness of 20 oz, just multiply the thickness of 20 oz by 4.

    1.37 mil x 20 = 27.4 mils = 20 oz

    PCB Thickness

    PCB Thickness

    What Are The Benefits Of A 20 Oz Copper PCB?

    There is a lot to like about 20 Oz Copper PCBs. It has several distinguishing characteristics which make it a great choice for high-end operations. Let us have a look at some of the advantages of this PCB:

    Exceptional thermal dispersion

    The copper-plated vias provide high heat resistance on this PCB. 20 Oz Copper PCBs are utilized in applications that need high speed and frequency. You may even use this PCB in a freezing environment.

    Mechanical sturdiness

    Copper printed circuit boards provide exceptional mechanical resilience. When this PCB is utilized, it increases the durability and robustness of the electrical system.

    A competent conductor

    20 Oz Copper boards are excellent conductors of electricity. This characteristic allows them to be used in the construction of electrical devices. They aid in the linking of numerous message boards. These circuit boards can transport current.

    Onboard heat sink

    An onboard heat sink is provided via thick copper boards. Using these boards, it is possible to create efficient heat sinks for mosaic surfaces.

    Exceptional dissipation factor

    Copper PCBs with a thickness of 20 oz are appropriate for significant components with a substantial loss of power. Overheating in electrical systems is prevented by using these printed circuit boards (PCBs). They are good at dissipating excess heat.

    Exotic materials support

    Copper is beneficial in protecting and enhancing exotic materials. When developing electrical components, it is occasionally necessary to employ exotic materials.

    Extreme temperatures may necessitate the use of an unusual material. Using large copper boards to eliminate circuit failures is possible because they entirely use an exceptional material.

    What Are The Testing Methods Of A 20 Oz Copper PCB?

    The 20 Oz is a high-quality product that should not result in the failure or recall of your final product, which would result in a loss of money for you. Even the most straightforward board may have problems, and if it is not well tested, it can be quite costly to a corporation in terms of both time and money.

    The earlier in the product’s life cycle that faults or concerns are identified, the less probability of incorporation or field failure.

    The following are the 20 Oz PCB testing methods:

    Inspection by sight

    An expert inspector must do visual inspections to establish what is appropriate and not. Visual inspections may suit the board’s aesthetic or visual appeal, and a single person can perform them to ensure that everything is in order.

    Slight imperfections in the solder mask might lead to the breakdown of a previously fine-looking circuit board.

    Automatic Optical Inspection (AOI)

    AOI captures a picture of the circuit with the help of a vision system. Picture faults are discovered by comparing the image to an anticipated image and a collection of design principles.

    Electrical Examination

    An electrical inspection is the most widely used approach for determining if a PCB is in excellent or poor condition. If you want to put an electronic board through an electrical test, you must put it in physical touch with measuring equipment. There are two sorts of tests that are carried out: continuity and isolation.

    Continuity testing ensures that the pads, traces, and holes are connected in a continuous route or with a suitable connection.

    Isolation testing determines whether traces are segregated or isolated.

    PCB Testing

    PCB Testing

    This video explains PCB testing.

    Is There Any Way To Ensure The Thickness Consistency Of A 20 Oz Copper PCB?

    The use of copper should be divided as equally as feasible across your design, as a general guideline. Although this is not always achievable, it is essential to consider this when designing the layout. Not just in terms of the PCB plating thickness on every layer but also how the copper is dispersed throughout the layer.

    There are two ways to guarantee that copper is distributed evenly across the layers of a PCB.

    High Definition Interconnect Method

    Arrange the traces to optimize copper flooding while preserving appropriate inter-trace spacing. As the forms are built up, it will be simple to mark ground vias around their peripheries.

    Micro-vias used during HDI building are tiny and only cover the layers required to connect the local ground surfaces to the generic ground planes.

    When a PCB uses HDI technology, there is a purpose. If you are going to use fine-pitch geometry, you will have a technological driver on your board at all times.

    Although they were designed for more popular solutions, micro-vias may be used as via-in-pad solutions for more extensive power and pins.

    If you have micro-vias, use them to your advantage. A microvia is always quicker than a through-hole via. While there are more as they go through the panel one by one, the procedure is well recognized and reasonably trustworthy.



    Plated Through-Hole Board

    PCB fabrication typically has to be kept low-tech because of budgetary restrictions.

    In terms of reliability, plated through-hole (PTH) is the most often used fabrication method. Our cars and rockets are typically equipped with it, and it is not uncommon to discover it beneath the hood. Although the cost of PTH boards has decreased, they have a long way to go in terms of market penetration.

    Every via traverses every layer, and it is simple to generate too many thermal routes or faraday cages using vias. There is a risk that the high density of stitching vias may impede power flow and connectivity.

    How To Choose The Best 20 Oz Copper PCB Manufacturer?

    China has steadily become the world’s largest producer of printed circuit boards. Between 2010 and 2020, China’s worldwide share of PCB production value increased from 32.18 percent to 49.36 percent.

    A large portion of the worldwide PCB manufacturing capacity is in Asia, particularly in China. While China is becoming the world’s top PCB manufacturer, it boasts one of its most excellent PCB manufacturing capacities and product varieties.

    PCB Manufacturer

    PCB Manufacturer

    Many issues, such as shorts, open circuits, destructive etching, and significant cosmetic scratches, will overwhelm you, and a slew of matters such as delays or defaults will follow, so it is critical to grasp and master how to pick a dependable PCB manufacturer.

    • Take a close look at the factory’s location and production capacity:
    • Check out PCB circuit board providers’ reputations
    • Concentrate on the expertise of PCB manufacturers.
    • Pay close attention to the quality inspectors who are experts in their field.
    • Consider if the delivery time can be assured before making a purchase.


    Making a 20 Oz Copper PCB is a difficult task. There are several aspects to take into account before moving on with production. For such a delicate PCB, you should always go with an experienced manufacturer.

    PCBMay is one of China’s leading PCB manufacturers. We have been producing 20 Oz Copper PCBs since 2008, and we have always been the best. If you have any queries about this PCB, do not hesitate to contact us.

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