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<title><![CDATA[EC21 Product Catalogs - 4 layer pcb]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/4_layer_pcb--10120399/1/4 layer pcb.html]]></link><item>
<title><![CDATA[4 Layer ENIG Impedance Control Half Hole FR4 PCB]]></title><link><![CDATA[https://hhcircuits.en.ec21.com/4_Layer_ENIG_Impedance_Control--11798970_11798975.html]]></link><description><![CDATA[Layer W/S: 6/3.5mil
Inner layer W/S: 6/4mil
Thickness: 0.8mm
Min. hole diameter: 0.28mm
Special process: impedance control+half hole
Advantages Of 4 Layer ENIG Impedance Control Half Hole Fr4 PCB
Own]]></description><pubDate><![CDATA[20230530]]></pubDate></item>
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<title><![CDATA[PCB - Multi-Layer]]></title><link><![CDATA[https://ckmo1018.en.ec21.com/PCB_Multi_Layer--12069932_12069954.html]]></link><description><![CDATA[layer PCB is a printed circuit board structure optimized for products requiring high-density, high-performance, and low-noise.
Specifications
Layer Count
• Typical Range: 4, 6, 8, 10, 12+ Layers
]]></description><pubDate><![CDATA[20260411]]></pubDate></item>
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<title><![CDATA[Professional Medical Equipment PCBA One-Stop PCB Assembly]]></title><link><![CDATA[https://tecoopcba.en.ec21.com/Professional_Medical_Equipment_PCBA_One--12055073_12055058.html]]></link><description><![CDATA[PCB manufacturing, including high-layer count boards, fine-pitch components, and various surface finishes. We adhere to strict quality control processes throughout the manufacturing cycle.
4. PCB Ass]]></description><pubDate><![CDATA[20260429]]></pubDate></item>
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<title><![CDATA[Combined Hydraulic Busbar Processing Machine PCBA Manufacturer | Grande]]></title><link><![CDATA[https://yygreattong.en.ec21.com/Combined_Hydraulic_Busbar_Processing_Machine--4357166_4357298.html]]></link><description><![CDATA[Supplier:Grande Electronics
Layers: 4
PCB：FR-4/1.6mm, 1oz finished copper
Application: Combined Hydraulic Busbar Processing Machine PCBA Manufacturer | Grande
Surface Treatment: HASL
PCBA Lead time]]></description><pubDate><![CDATA[20250401]]></pubDate></item>
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<title><![CDATA[Material Handling Equipment Circuit Board Industrial PCBA Electronics]]></title><link><![CDATA[https://pcbdesign12.en.ec21.com/Material_Handling_Equipment_Circuit_Board--10035716_10038624.html]]></link><description><![CDATA[Supplier: Grande Electronics
Project: Material Handling Equipment Circuit Board Industrial PCBA Electronics
Layers: 4
PCB：FR-4/1.6mm, 1oz finished copper
Surface Treatment: ENIG
PCBA Lead time:3-4 ]]></description><pubDate><![CDATA[20250401]]></pubDate></item>
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<title><![CDATA[Dust Collector PCBA Manufacturer PCB Assembly Serviece]]></title><link><![CDATA[https://lfynet.en.ec21.com/Dust_Collector_PCBA_Manufacturer_PCB--7967651_12008639.html]]></link><description><![CDATA[PCB Assembly Serviece
PCB capability and services:1. Products range-single-sided, double side &amp; multi-layer PCB with competitive price, good quality and excellent service.2. CEM-1, FR-4, FR-4 High TG]]></description><pubDate><![CDATA[20240923]]></pubDate></item>
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<title><![CDATA[One-stop PCBA Electronics Manufacturers Service  High Quality Factory PCB PCBA Service]]></title><link><![CDATA[https://xubo783156718.en.ec21.com/One_stop_PCBA_Electronics_Manufacturers--11984085_12004960.html]]></link><description><![CDATA[PCB capacity
PCB name
ElectronicPCBassemblymanufacturercustomcircuitboardPCBA
Material
FR-4; High TG FR-4; Aluminum; CEM-1; CEM-3; Rogers, etc
PCB type
Rigid, flexible, rigid-flexible
Layer NO.
1, 2,]]></description><pubDate><![CDATA[20240914]]></pubDate></item>
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<title><![CDATA[Aluminum Printed Circuit Board]]></title><link><![CDATA[https://pcbmain68.en.ec21.com/Aluminum_Printed_Circuit_Board--11046819_11248726.html]]></link><description><![CDATA[layer with a high thermal conductivity for a lower thermal resistance. Metal core PCB transfer heat 8 to 9 times faster than Rigid FR4 PCB. MCPCB laminates dissipate heat, keeping heat generating com]]></description><pubDate><![CDATA[20240606]]></pubDate></item>
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<title><![CDATA[OEM PCBA Manufacturer Customize]]></title><link><![CDATA[https://idsystemkr.en.ec21.com/OEM_PCBA_Manufacturer_Customize--11944840_11944841.html]]></link><description><![CDATA[PCB/PCBA &amp; SMT
(1) Consumer Electronic Device
(2) 2/4/6/8 layers or higher
(3) Special Production Process: Hole by Etching, Button Plate, Laser Drill, Build-up
(4) High Quality Control System, Quick ]]></description><pubDate><![CDATA[20240530]]></pubDate></item>
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<title><![CDATA[Heavy Copper Printed Circuit Board]]></title><link><![CDATA[https://bgpcba.en.ec21.com/Heavy_Copper_Printed_Circuit_Board--11935225_11935290.html]]></link><description><![CDATA[layers ranging from 1 oz to 3 oz (ounce per square foot), heavy copper PCBs can have copper layers exceeding 4 oz, with some designs reaching up to 20 oz or more.
The primary purpose of heavy copper ]]></description><pubDate><![CDATA[20240512]]></pubDate></item>
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<title><![CDATA[Non-Woven Fabric Manufacturing Machine Control Board PCBA Electronics]]></title><link><![CDATA[https://grandepcba.en.ec21.com/Non_Woven_Fabric_Manufacturing_Machine--11194245_11194256.html]]></link><description><![CDATA[Layers PCB, Components Sourcing, SMT, PCBA testing, PCBA Aging test, PCBA Packing and PCBA Shipping.PCBA Quality Assurance1, Certifications: UL, SGS, TUV, BV, ROHS, ISO9001: 2008, TS16949: 2008 2, 7 ]]></description><pubDate><![CDATA[20240506]]></pubDate></item>
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<title><![CDATA[CEM-3 Electronic SMT PCB Assembly with OSP Surface Finish 2oz Copper Thickness]]></title><link><![CDATA[https://smtpcbaassemblycom.en.ec21.com/CEM_3_Electronic_SMT_PCB--11887216_11887217.html]]></link><description><![CDATA[PCB AssemblySurface Finish: HASL, ENIG, OSP, Immersion Silver, Immersion TinBoard Type: Single-sided, Double-sided, Multi-layerLead Time: 2-3 WeeksCopper Thickness: 1/2oz, 1oz, 2oz, 3oz, 4ozWe provid]]></description><pubDate><![CDATA[20240112]]></pubDate></item>
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<title><![CDATA[FR4 Base LED PCB Circuit Board 1oz Copper 3/3MIL Min Line]]></title><link><![CDATA[https://electronicpcbboard.en.ec21.com/FR4_Base_LED_PCB_Circuit--11895685_11895686.html]]></link><description><![CDATA[Layers1-28 layers1-14 layersMIN Line width(mil)3mil4milMIN Line space(mil)3mil4milMin via (mechanical drilling)Board thickness≤1.2mm0.15mm0.2mmBoard thickness≤2.5mm0.2mm0.3mmBoard thickness＞2.5]]></description><pubDate><![CDATA[20240131]]></pubDate></item>
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<title><![CDATA[Aluminum PCB]]></title><link><![CDATA[https://ronghuaindustry.en.ec21.com/Aluminum_PCB--11791188_11794567.html]]></link><description><![CDATA[PCB consists of a 3-layer structure, which are circuit layers (copper foil), insulation layers and metal grassroots. It is commonly used for LED lighting products. There are positive and negative sid]]></description><pubDate><![CDATA[20230521]]></pubDate></item>
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<title><![CDATA[Printed Circuit Board]]></title><link><![CDATA[https://greenstone23.en.ec21.com/Printed_Circuit_Board--11778431_11889762.html]]></link><description><![CDATA[4 PCB, heavy copper PCB, HDI PCB, High-TG PCB, multi-layer PCB, rigid PCB and etc.
What is PCB?
PCB is the abbreviation of the china printed circuit board. PCB composed by insulated baseboard, pads f]]></description><pubDate><![CDATA[20240117]]></pubDate></item>
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<title><![CDATA[Flexible PCB]]></title><link><![CDATA[https://tendtronic.en.ec21.com/Flexible_PCB--9385605_9497811.html]]></link><description><![CDATA[layer PCB(4~6 layers): 4~6 Day QTA sample. 
Multilayer PCB(8~12 layers): 7~8 Day QTA sample. 
10~15 Day Mass production first lot. 
Packing and Shipping Departments ensure that the product is accurat]]></description><pubDate><![CDATA[20150505]]></pubDate></item>
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<title><![CDATA[Rogers Rt/Duroid 5880]]></title><link><![CDATA[https://karenxcepcb.en.ec21.com/Rogers_Rt_Duroid_5880--10524601_10524661.html]]></link><description><![CDATA[layer
Board Size:
3*9cm
Copper Thinknes:
1 Oz
Min Line Width:
4 Mil
Min Line Space:
4mil
Surface Finish:
Immersion Gold
Name:
Rogers Pcb
Multilayer Rogers Rt / Duroid 5880 1 oz copper PCB In Digital ]]></description><pubDate><![CDATA[20170829]]></pubDate></item>
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<title><![CDATA[Good Working PCBA  for Electronics]]></title><link><![CDATA[https://finest202104.en.ec21.com/Good_Working_PCBA_for_Electronics--11370329_11384176.html]]></link><description><![CDATA[Item
PCB Capability
Laminate materials 
FR4,High TG FR4, Hign Frequency, Alum, FPC
Board Thickness
0.3mm-5.0mm, Flex 0.1-0.25mm
Thickness Tolerance
+-10%
Number of layers
1-22L
Min Line Width/space
4]]></description><pubDate><![CDATA[20230519]]></pubDate></item>
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<title><![CDATA[Fast Supply Electric Circuit Board Assembly Manufacturer]]></title><link><![CDATA[https://cttpcb.en.ec21.com/Fast_Supply_Electric_Circuit_Board--10919275_11050449.html]]></link><description><![CDATA[layers in various structures.
Check our HDI PCB
capabilities by below table:
Feature
Capability
Quality Grade
Standard IPC 2
Number of Layers
2 - 20layers
Build Time
2days - 5weeks
Material
FR4 stand]]></description><pubDate><![CDATA[20231206]]></pubDate></item>
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<title><![CDATA[12Layer  Printed Circuit Board]]></title><link><![CDATA[https://ayesha19920906.en.ec21.com/12Layer_Printed_Circuit_Board--11384985_11384986.html]]></link><description><![CDATA[Layer ELIC 0.8mm board thickness,0.35 Pitch BGA, 50um Line widthOSP + Selective ENIG 
Product: Customized OEM PCB Manufacturing Service with Gerber File
Material: FR4, Aluminum, CEM-3,CEM-1, HI-TG, R]]></description><pubDate><![CDATA[20210604]]></pubDate></item>
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<title><![CDATA[Industrial Computer PCB]]></title><link><![CDATA[https://techighpcb.en.ec21.com/Industrial_Computer_PCB--11812588_11812592.html]]></link><description><![CDATA[PCB
Industrial Computer PCB are mainly used in equipment from the field of industrial automation. In the historical trend of global Industry 4.0 and the Industrial Internet,Industrial Computer PCB wi]]></description><pubDate><![CDATA[20230628]]></pubDate></item>
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<title><![CDATA[PCB Design Capabilities]]></title><link><![CDATA[https://gtpcba.en.ec21.com/PCB_Design_Capabilities--11805203_11836258.html]]></link><description><![CDATA[PCB Layer management for signal integrity and impedance control
• DDR, DDR2, DDR3, DDR4, SAS and differential pair routing expertise
• High-density SMT designs (BGA, uBGA, PCI, PCIE, CPCI…)
•]]></description><pubDate><![CDATA[20230821]]></pubDate></item>
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<title><![CDATA[Red Soldermask Industry Control Electronics PCB Assembly]]></title><link><![CDATA[https://ucreatepcb123.en.ec21.com/Red_Soldermask_Industry_Control_Electronics--11761239_11786592.html]]></link><description><![CDATA[4L ; 72 hours for 6L.
3. Component purchase: 2 days if all components is available in our domestic market. 
4. PCB Assembly: samples: within 8 days / mass production: within 12 days
LAYER
PROTOTYPE
M]]></description><pubDate><![CDATA[20230510]]></pubDate></item>
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<title><![CDATA[4L Electronic Scuba Blue Popular PCB Board]]></title><link><![CDATA[https://hjl39506147520.en.ec21.com/4L_Electronic_Scuba_Blue_Popular--11890882_11907637.html]]></link><description><![CDATA[4L Electronic PCB Board fabrication
IPC-4101 Specification for base materials rigid / multi-layer
IPC-600G Acceptability of Printed Boards / Class 2
IPC-6011 Generic Performance Specification for Pri]]></description><pubDate><![CDATA[20240229]]></pubDate></item>
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<title><![CDATA[Banding Machine Pcba Housing Pcba Service Electronic Assembly Shenzhen PCBA Factory]]></title><link><![CDATA[https://440183199803063144.en.ec21.com/Banding_Machine_Pcba_Housing_Pcba--11408756_11473657.html]]></link><description><![CDATA[PCB. Just send the sample PCB to us, we could clone the PCB design and work out it.
Q5:What is STHL&apos;s lead time?
A:Sample:
1-2 Layers: 5 to 7working days
4-8 Layers: 12 working days
Mass production:
]]></description><pubDate><![CDATA[20220530]]></pubDate></item>

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