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<title><![CDATA[EC21 Product Catalogs - 4 layers pcb]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/4_layers_pcb--10120399/1/4 layers pcb.html]]></link><item>
<title><![CDATA[4 Layer ENIG Impedance Control Half Hole PCB Electric Circuit Board]]></title><link><![CDATA[https://hhcircuits.en.ec21.com/4_Layer_ENIG_Impedance_Control--11798970_11798976.html]]></link><description><![CDATA[Number of layers: 4
Surface finish: ENIG
Base material: FR4
Outer Layer W/S: 6/4mil
Inner layer W: 21mil
Thickness: 0.4mm
Min. hole diameter: 0.2mm
Special process: impedance control+half hole
Advant]]></description><pubDate><![CDATA[20230530]]></pubDate></item>
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<title><![CDATA[PCB - Single Sided]]></title><link><![CDATA[https://ckmo1018.en.ec21.com/PCB_Single_Sided--12069932_12069952.html]]></link><description><![CDATA[PCB optimized for low-density, simple circuits.
Specifications
Base Material
Key factors determining the mechanical strength, electrical properties, and price of single-sided PCBs.
FR-4
• Glass fib]]></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[Robotic Surgical Devices - Medical PCBA Manufacturer - Grande Electronics]]></title><link><![CDATA[https://yygreattong.en.ec21.com/Robotic_Surgical_Devices_Medical_PCBA--4357166_4357516.html]]></link><description><![CDATA[Supplier:Grande Electronics
Layers: 4
PCB：FR-4/1.6mm, 1oz finished copper
Application: Robotic Surgical Devices - Medical PCBA Manufacturer - Grande Electronics
Surface Treatment: HASL
PCBA Lead ti]]></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[Hdi PCB]]></title><link><![CDATA[https://pcbmain68.en.ec21.com/Hdi_PCB--11046819_11046834.html]]></link><description><![CDATA[layers PCB, quick lead PCB factory
, we guarantee quality and delivery time. Our company is a leader in the industry and we will not disappoint you!
More information:
https://www.blog4evers.com
https]]></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 than standard PCBs. While standard PCBs typically feature copper layers ranging from 1 oz to 3 oz (ounce per square foot), heavy copper PCBs can have copper layers exceeding 4 oz, with some de]]></description><pubDate><![CDATA[20240512]]></pubDate></item>
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<title><![CDATA[Semi-Auto Strapping Machine PCBA | Assembled Printed Circuit Boards]]></title><link><![CDATA[https://grandepcba.en.ec21.com/Semi_Auto_Strapping_Machine_PCBA--11194245_11194246.html]]></link><description><![CDATA[Supplier: Shenzhen Grande Electronics Layers:4PCB：FR-4/1.6mm, 1oz finished copper Application: Semi-Auto Strapping Machine PCBA | Assembled Printed Circuit BoardsSurface Treatment:ENIGPCBA Lead tim]]></description><pubDate><![CDATA[20240506]]></pubDate></item>
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<title><![CDATA[20 Layers OEM Circuit Board Design PCB Surface Mount Fabrication]]></title><link><![CDATA[https://cttpcb.en.ec21.com/20_Layers_OEM_Circuit_Board--10919275_11050438.html]]></link><description><![CDATA[20 layers OEM circuit board design PCB surface mount fabrication
Custom PCB assembly
, PCBA Supplier
4 YAMAHA High-speed SMT Lines
6 million daily SMT placements capability
400,000 daily DIP placemen]]></description><pubDate><![CDATA[20231206]]></pubDate></item>
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<title><![CDATA[Loudspeaker PCB]]></title><link><![CDATA[https://techighpcb.en.ec21.com/Loudspeaker_PCB--11812588_11812591.html]]></link><description><![CDATA[Loudspeaker PCB
1. Production Introduction of Loudspeaker PCB
Loudspeaker PCB are mainly used in equipment from the field of industrial automation. In the historical trend of global Industry 4.0 and ]]></description><pubDate><![CDATA[20230628]]></pubDate></item>
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<title><![CDATA[Rigidflex PCB Pcba Service PCB Assembly Board Custom Made Shenzhen One-stop PCBA Factory]]></title><link><![CDATA[https://440183199803063144.en.ec21.com/Rigidflex_PCB_Pcba_Service_PCB--11408756_11441318.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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<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[PCB Surface]]></title><link><![CDATA[https://greenstone23.en.ec21.com/PCB_Surface--11778431_11778453.html]]></link><description><![CDATA[4 mils.
The silkscreen layer is the top layer of the printed circuit board
and serves as a reference indicator for placing components on the PCB. The graphics and text on PCB, a circuit board is usua]]></description><pubDate><![CDATA[20230428]]></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[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[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[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[Golden Triangle Flex PCB Capabilities]]></title><link><![CDATA[https://gtpcba.en.ec21.com/Golden_Triangle_Flex_PCB_Capabilities--11805203_11836254.html]]></link><description><![CDATA[PCB, which is done by laminating thin layers of copper foil onto the flex material. The copper layers are then patterned with a photolithography process, where an etching mask is used to create the d]]></description><pubDate><![CDATA[20230821]]></pubDate></item>
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<title><![CDATA[Medical Electronics Turnkey PCB Assembly]]></title><link><![CDATA[https://ucreatepcb123.en.ec21.com/Medical_Electronics_Turnkey_PCB_Assembly--11761239_11826376.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[20230728]]></pubDate></item>

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