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<title><![CDATA[EC21 Product Catalogs - 4 layer pcb]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/4_layer_pcb--10120303/1/4 layer pcb.html]]></link><item>
<title><![CDATA[4 Layer PCB]]></title><link><![CDATA[https://szxpcb.en.ec21.com/4_Layer_PCB--3415393_5363968.html]]></link><description><![CDATA[we&apos;re one of the professional pcb manufactory in China. Selling various kinds of printed circuit boards which apply to all area electronics products as well as your R&amp;D requirements. If you have any ]]></description><pubDate><![CDATA[20110423]]></pubDate></item>
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<title><![CDATA[4 Layers Half Hole PCB]]></title><link><![CDATA[https://rcypcb.en.ec21.com/4_Layers_Half_Hole_PCB--5377851_5378541.html]]></link><description><![CDATA[4000, TS16949, RoHS
Our strong points
&amp;bull;2 to 16 layers PCB manufacturing
&amp;bull;No MOQ, we can make samples for you to test quality, and 1 piece only
&amp;bull;Sample fee will be returned if mass prod]]></description><pubDate><![CDATA[20130506]]></pubDate></item>
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<title><![CDATA[4 Layers PCB]]></title><link><![CDATA[https://adplus01.en.ec21.com/4_Layers_PCB--10655888_10656034.html]]></link><description><![CDATA[AD Plus Corporation provides service in the comprehensive range of professional PCB manufacturing. 
We passed ISO 9001:2015 certified, ISO 14001:2015, UL approved, ROHS etc. 
Ranging from 0-28 layers]]></description><pubDate><![CDATA[20180131]]></pubDate></item>
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<title><![CDATA[FR4 PCBs  with 4  Layers]]></title><link><![CDATA[https://finest202104.en.ec21.com/FR4_PCBs_with_4_Layers--11378521_11378526.html]]></link><description><![CDATA[Base Material: fr4 laminate
Layer: 4 layer
Surface finished: ENIG
Profile: CNC+V-cut
Copper thickness: 1OZ
Board thickness: 1.6mm
Break down voltage for insulated layer: &gt;2kV
]]></description><pubDate><![CDATA[20230519]]></pubDate></item>
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<title><![CDATA[Motherboard 8 Layer Motherboard ENIG FR4 PCB]]></title><link><![CDATA[https://chanyee.en.ec21.com/Motherboard_8_Layer_Motherboard_ENIG--11457151_11457155.html]]></link><description><![CDATA[Motherboard 8 layer motherboard ENIG FR4
PCB 
Multi PCB Motherboard
Description
Application area: Motherboard
Product feature: Eight-layer motherboard
Layer: 8
Surface treatment: ENIG
Material: FR4
L]]></description><pubDate><![CDATA[20231124]]></pubDate></item>
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<title><![CDATA[4OZ Heavy Copper 12 Layer PCB with ENIG]]></title><link><![CDATA[https://hjl39506147520.en.ec21.com/4OZ_Heavy_Copper_12_Layer--11890882_11907658.html]]></link><description><![CDATA[PRODUCT DESCRIPTION
Quick Details: 4OZ, TG170, 12mil /12mil 
Base Material
Fr4 TG170
Layer Counts
12L
Board Thickness
3.2 mm
Copper Thickness
4OZ
Min. Hole Size
16mil (0.4mm)
Min. Line Width/ Spacing]]></description><pubDate><![CDATA[20240229]]></pubDate></item>
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<title><![CDATA[Heavy Duty Marine Sand Suction Pump Multilayer Assembled PCB Fabrication]]></title><link><![CDATA[https://pcbdesign12.en.ec21.com/Heavy_Duty_Marine_Sand_Suction--10035716_10079487.html]]></link><description><![CDATA[Supplier: Grande Electronics
Project: Heavy Duty Marine Sand Suction Pump Multilayer Assembled PCB Fabrication
Layers: 4
PCB type: S1141
Min Via: 0.2mm
Surface Treatment: HASL
PCBA Lead time: 3-4 wee]]></description><pubDate><![CDATA[20250401]]></pubDate></item>
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<title><![CDATA[Alumina Ceramic Circuit Board OEM Motherboard Aluminum Nitride Board Circuit-Board Professional Manu]]></title><link><![CDATA[https://sncpcb.en.ec21.com/Alumina_Ceramic_Circuit_Board_OEM--11979593_11981251.html]]></link><description><![CDATA[49, UL, ISOSurface TreatmentGold Finger/Hard GoldTest100% E-TestLayers1-36 LayersCopper Thickness0.5-12oz(18-420um)Hole DiameterMin0.05mmMin. Line Spacing0.10mm(4mil)Board Thickness0.2-6mmSolder Mask]]></description><pubDate><![CDATA[20240806]]></pubDate></item>
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<title><![CDATA[Benchtop Biochemical Analyzer PCB Manufacturing Company | Grande China]]></title><link><![CDATA[https://grandepcba.en.ec21.com/Benchtop_Biochemical_Analyzer_PCB_Manufacturing--11194245_11194281.html]]></link><description><![CDATA[Supplier: Shenzhen Grande Electronics
Layers: 4
Application: Benchtop Biochemical Analyzer PCB Manufacturing Company | Grande China
PCB Parameter: FR-4/HTG150
Thickness: 1.6mm
Surface Treatment: ENIG]]></description><pubDate><![CDATA[20240506]]></pubDate></item>
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<title><![CDATA[Print Circuit Board - ROHS PCB]]></title><link><![CDATA[https://elecsound.en.ec21.com/Print_Circuit_Board_ROHS_PCB--728594_3607435.html]]></link><description><![CDATA[layers PCB, PCBA, Our PCB factory has obtained ISO 9001 and UL, and we specialize in single, double-sided, 4 layer to 8 layers at a very competitive price with excellent quality. Lead time is 7 to 10]]></description><pubDate><![CDATA[20090615]]></pubDate></item>
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<title><![CDATA[Professional Experience Metal Core PCB Circuit Board Enepig PCB Fabrication Factory]]></title><link><![CDATA[https://2pcbtech.en.ec21.com/Professional_Experience_Metal_Core_PCB--11782526_11782527.html]]></link><description><![CDATA[PCB
A single-sided PCB, by definition, has a single conductive copper layer which sits on top of a supporting dielectric, typically resin impregnated woven glass fabric (FR4).
Double Sided PCB
A doub]]></description><pubDate><![CDATA[20230505]]></pubDate></item>
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<title><![CDATA[Multilayer PCB]]></title><link><![CDATA[https://ronghuaindustry.en.ec21.com/Multilayer_PCB--11791188_11794566.html]]></link><description><![CDATA[Description:
The multi-layer PCB has at least 3 layers of conductive layers, 2 of which are on the outer surface, and the remaining layer is synthesized in the insulation board. Multilayer PCB combin]]></description><pubDate><![CDATA[20230521]]></pubDate></item>
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<title><![CDATA[Hybrid PCB Stack-up Optimizes Signal Integrity and the PCB Cost]]></title><link><![CDATA[https://bcco.en.ec21.com/Hybrid_PCB_Stack_up_Optimizes--10882619_10944709.html]]></link><description><![CDATA[PCB. We mainly refer to high frequency
material mixed with epoxy glass.
Let’s
see the stack-up to get idea about hybrid structure.
Layer
1 to layer 2 is the core of RO4350B high frequency material ]]></description><pubDate><![CDATA[20230113]]></pubDate></item>
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<title><![CDATA[Double-Sided PCB]]></title><link><![CDATA[https://tendtronic.en.ec21.com/Double_Sided_PCB--9385605_9497785.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 PCB]]></title><link><![CDATA[https://karenxcepcb.en.ec21.com/Rogers_PCB--10524638_10524639.html]]></link><description><![CDATA[RF/Microwave PTFE-based Materials 2 Layer 0.508MM Rogers4003 RF PCB
Key specifications/special features: 
Rogers PCB 
Rogers 4350B, Roger3003, Rogers4003,Roger 5880 and more material on stock 
PCB th]]></description><pubDate><![CDATA[20170829]]></pubDate></item>
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<title><![CDATA[6 Layers Rigid and Flexible PCB]]></title><link><![CDATA[https://mktpcb.en.ec21.com/6_Layers_Rigid_and_Flexible--10712329_10712348.html]]></link><description><![CDATA[4 PCB and nd flexible circuits. rigid flex board circuit is mainly used in Communications,Industrial, Consumer Electronics,Aerospace, Automotive,Military, 
Double-sided flexible PCB 
Type: 2layer 
Ri]]></description><pubDate><![CDATA[20180601]]></pubDate></item>
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<title><![CDATA[Custom PCBA and PCB in IOT Tools Protable Efficient with Big Volume in Storage]]></title><link><![CDATA[https://cesgatepcbec21.en.ec21.com/Custom_PCBA_and_PCB_in--11155667_11412863.html]]></link><description><![CDATA[Cesgate has experience in manufacturing 4 layer PCB, 6 layer PCB, and multilayer PCB. 
If you want to find a trustworthy PCBA supplier, ISO9001 Certified, IPC 2 class standard acccordingly, welcome t]]></description><pubDate><![CDATA[20210709]]></pubDate></item>
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<title><![CDATA[High Frequency Printed Circuit Board Production, Gerber File for Quote]]></title><link><![CDATA[https://cttpcb.en.ec21.com/High_Frequency_Printed_Circuit_Board--10919275_11050424.html]]></link><description><![CDATA[high frequency printed circuit board production
, gerber file for quote, competitive price
Brand Name: HK CT TECH OEM PCB
Model Number: Double sided, Multilayer pcb
Base Material: FR4,Rogers,Aluminum]]></description><pubDate><![CDATA[20231206]]></pubDate></item>
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<title><![CDATA[26 Layers FPGA Card]]></title><link><![CDATA[https://ayesha19920906.en.ec21.com/26_Layers_FPGA_Card--11384983_11391839.html]]></link><description><![CDATA[26Layers FPGA Card of Ali*a*a group, 
4.0mm board thickness
TU872SLK material, Skip via L1-L3, Setp Gold finger
Board thickness on G/F ：1.6mm
1.0mm Pitch with two track Backdrill
Product: Customize]]></description><pubDate><![CDATA[20210603]]></pubDate></item>
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<title><![CDATA[Glucometer PCB]]></title><link><![CDATA[https://techighpcb.en.ec21.com/Glucometer_PCB--11812588_11812589.html]]></link><description><![CDATA[PCB products are diversified, and the main requirements are stable quality and high product reliability.Some key parameters of glucometer PCB manufactured by our company as below:
Layer
4L
Copper thi]]></description><pubDate><![CDATA[20230628]]></pubDate></item>

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