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<title><![CDATA[EC21 Product Catalogs - 4 hole]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/4-hole--10120399/1/4 hole.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[Number of layers: 4
Surface finish: ENIG
Base material: FR4
Outer 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
]]></description><pubDate><![CDATA[20230530]]></pubDate></item>
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<title><![CDATA[ISO-Certified Automotive Sound System PCBA Supplier]]></title><link><![CDATA[https://tecoopcba.en.ec21.com/ISO-Certified-Automotive-Sound-System--12056085_12058137.html]]></link><description><![CDATA[4-12 Layers)
• SMT &amp; Through-Hole Assembly Capabilities
• Optimized Thermal Management Solutions
Built for Automotive Demands:
• AEC-Q100/Q200 Qualified Components
• Extreme Temperature Opera]]></description><pubDate><![CDATA[20250801]]></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[Magnetics for Power Electronics Converters Circuit Board Assembly (PCBA)]]></title><link><![CDATA[https://yygreattong.en.ec21.com/Magnetics-for-Power-Electronics-Converters--4357166_4361405.html]]></link><description><![CDATA[Supplier:Grande Electronics
Layers: 4
PCB：FR-4/1.6mm, 1oz finished copper
Application: Magnetics For Power Electronics Converters Circuit Board Assembly (PCBA)
Surface Treatment: HASL
PCBA Lead tim]]></description><pubDate><![CDATA[20250401]]></pubDate></item>
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<title><![CDATA[Aluminium PCB]]></title><link><![CDATA[https://haosens2010.en.ec21.com/Aluminium-PCB--4624610_4648583.html]]></link><description><![CDATA[hole diameter: 0.10mm (4mil)
- PTH hole diameter tolerance: +/-0.076mm (+/-3mil)
- NPTH hole diameter tolerance: +/-0.03mm (+/-1.2mil)
- Maximum board size: 460 x 620mm (18 x 24)
- Board finishing ty]]></description><pubDate><![CDATA[20250220]]></pubDate></item>
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<title><![CDATA[Pressure Sensor Medical Electronic Care Device PCB Board Assembly]]></title><link><![CDATA[https://avpcb.en.ec21.com/Pressure-Sensor-Medical-Electronic-Care--12017667_12017668.html]]></link><description><![CDATA[4MM/0.6MM/0.8MM/1MM/1.6MM
Other attributes
Model Number
Place of Origin Guangdong, China
Copper Thickness 0.5OZ/1OZ
Min. Hole Size 0.075mm
Min. Line Width 0.075mm
Min. Line Spacing 0.075mm
Surface Fi]]></description><pubDate><![CDATA[20241015]]></pubDate></item>
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<title><![CDATA[40001339 Juki 501 Nozzle]]></title><link><![CDATA[https://beckysu.en.ec21.com/40001339-Juki-501-Nozzle--8604216_8603598.html]]></link><description><![CDATA[40001339 Juki 501 Nozzle
KE2010——2040
PART No.
PART NAME
SIZE(mm)
REMARKS
E3608-729-0A0
#500 ASS&apos;Y(2-HOLES)
0.5/1.0
E3600-729-0A0
#501 ASS&apos;Y
Φ0.7/Φ0.2
E3601-729-0A0
#502 ASS&apos;Y
Φ0.7/Φ0.4
E3602]]></description><pubDate><![CDATA[20241015]]></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[hole components insertion3. IC pre-programming / Burning on-line4. Function testing as requested5. Complete Unit assembly ( which including plastics, metal box, Coil, cable inside etc)
Dust Collector]]></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[4, 6, up to 24 layer
Shape
Rectangular, round, slots, cutouts, complex, irregular
Max PCB dimensions
1200mm*600mm
Board Thickness
0.2mm-4mm
Thickness Tolerance
±10%
Min Hole Size
0.1mm (4 mil)
Coppe]]></description><pubDate><![CDATA[20240914]]></pubDate></item>
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<title><![CDATA[China OEM/ODM PCBA Experts in Customized Electronics Motherboards Assembly Inverter LED PCB SMT PCBA]]></title><link><![CDATA[https://sncpcb.en.ec21.com/China-OEM-ODM-PCBA-Experts--11979593_11981134.html]]></link><description><![CDATA[Basic Info.Model NO.PCBAConditionNewSurface TreatmentGold Finger/Hard GoldTest100% E-TestCopper Thickness0.5-12oz(18-420um)Hole DiameterMin0.05mmMin. Line Spacing0.10mm(4mil)Board Thickness0.2-6mmSol]]></description><pubDate><![CDATA[20240806]]></pubDate></item>
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<title><![CDATA[Flex-rigid PCB]]></title><link><![CDATA[https://pcbmain68.en.ec21.com/Flex-rigid-PCB--11046819_11046827.html]]></link><description><![CDATA[holes (PTH), which is different from a flexible circuit with FR4/PI stiffener on top or bottom of flex circuit only by the means of preventive or thermal sensitive adhesive only, no PTH.
Printed Circ]]></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[Single Cu-base PCB]]></title><link><![CDATA[https://pcbpcbaseller.en.ec21.com/Single-Cu-base-PCB--10961296_11944082.html]]></link><description><![CDATA[4-12W/m.k
●Thickness of the aluminium core: 0,5–2,0 mm
●Copper thickness: 18–105 μm
●Minimum drill hole diameter PCB (PTH): ≥ 0,2 mm
●Minimum drill hole diameter PCB (NPTH): ≥ 1,0 mm]]></description><pubDate><![CDATA[20240528]]></pubDate></item>
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<title><![CDATA[Embroidery Machine Prototype PCB Assembly Company | Grande Electronics]]></title><link><![CDATA[https://grandepcba.en.ec21.com/Embroidery-Machine-Prototype-PCB-Assembly--11194245_11194265.html]]></link><description><![CDATA[Supplier: Shenzhen Grande Electronics
Layers: 4
PCB：FR-4/1.6mm, 1oz finished copper
Application: Embroidery Machine Prototype PCB Assembly Company | Grande Electronics
Surface Treatment: HASL
PCBA ]]></description><pubDate><![CDATA[20240506]]></pubDate></item>
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<title><![CDATA[Wireless ADSL Modem Router PCB Circuit Board Modem FPC]]></title><link><![CDATA[https://leadsintec2024.en.ec21.com/Wireless-ADSL-Modem-Router-PCB--11911491_11911492.html]]></link><description><![CDATA[itemvalueModel NumberLeadsintec 1017Place of OriginGuangdongBrand NameLeadsintecBase MaterialFR-4, AluminumCopper Thickness0.5-4OZBoard Thickness0.5-4mmMin. Hole Size0.2mmMin. Line Width0.1mmMin. Lin]]></description><pubDate><![CDATA[20240313]]></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 prototype
Place of Origin
Shenzhen, China
Base Material
4L, FR4,TG135 
Board Thickness
1.6 mm
Copper Thickness
1OZ 
Min. Hole Size
4mil (0.1mm)
Min. Line Width/ Spacing
4mil (]]></description><pubDate><![CDATA[20240229]]></pubDate></item>
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<title><![CDATA[Multilayer PCBA]]></title><link><![CDATA[https://pennydlo2015.en.ec21.com/Multilayer-PCBA--11303710_11304593.html]]></link><description><![CDATA[1.Detailed Terms for Pcb Assembly
1)Technical requirement: 
1. Professional Surface-mounting and Through-hole soldering Technology
2. Various sizes like precision0402, 0603, 0805, 1210 and 2512 compo]]></description><pubDate><![CDATA[20201205]]></pubDate></item>
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<title><![CDATA[PCB Manufacturer PCB Assembly Service Customized Printed Circuit Board in China]]></title><link><![CDATA[https://ruomeipcb02.en.ec21.com/PCB-Manufacturer-PCB-Assembly-Service--11819316_11819317.html]]></link><description><![CDATA[width/gap 3.5/4mil(laser drill)Min. hole size 0.15mm(mechanical drill)/4mil(laser drill)Min. Annlar Ring 4milMax Copper thickness 6OZMin Solder Mask Bridge 0.08mmPlugging Vias capability 0.2-0.8mm]]></description><pubDate><![CDATA[20230713]]></pubDate></item>
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<title><![CDATA[MCPCB Manufacturing for LED Products]]></title><link><![CDATA[https://abiscircuits.en.ec21.com/MCPCB-Manufacturing-for-LED-Products--10327532_10327540.html]]></link><description><![CDATA[1
Layer
1-2 layers
2
Material
Aluminum base
3
Board thickness
0.3mm-5mm
4
Max.finished board size
1200*560mm
5
Min hole size
0.3mm(12mil)
6
Min.line width
0.1mm(4mil)
7
Min.line spacing
0.1mm(4mil)
8]]></description><pubDate><![CDATA[20200402]]></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[hole, blind/buried via and laser via technologies
• Flexible / flex-rigid printed circuits
• HDI Designs with micro vias and advanced materials – Via-in-Pad, laser micro vias.
• High speed, m]]></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[PRODUCT DETAI
Item 
Speci. 
PCB SMT Min thickness
T＜0.1mm
PCB SMT Max thickness
T＞4.5mm
PCB SMT Min Length
L≥3mm,
PCB SMT Min Width
W≥3mm
PCB SMT Max Length
L ＞ 1200mm
PCB SMT Max Width
W]]></description><pubDate><![CDATA[20230510]]></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[Detailed Product Description
Color:
Yellow
Material:
Rogers Material
Layer:
Multilayer
Board Size:
3*9cm
Copper Thinknes:
1 Oz
Min Line Width:
4 Mil
Min Line Space:
4mil
Surface Finish:
Immersion Gol]]></description><pubDate><![CDATA[20170829]]></pubDate></item>
<item>
<title><![CDATA[Pcba Service for Elevator/Lift Controller PCB Assembly Board Custom Made Shenzhen PCBA Factory]]></title><link><![CDATA[https://440183199803063144.en.ec21.com/Pcba-Service-for-Elevator-Lift--11408756_11409542.html]]></link><description><![CDATA[hole process.. All documents from customers are never shared with any third parties.
Q4. MOQ?
A: There is no MOQ in STHL.We are able to handle Small as well as large volume production with flexibilit]]></description><pubDate><![CDATA[20220530]]></pubDate></item>
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<title><![CDATA[ODM Gold Finger PCB Board Fabrication High TG FR4 PCBA for Industrial Field]]></title><link><![CDATA[https://pcbboardfabrication.en.ec21.com/ODM-Gold-Finger-PCB-Board--11776872_11776873.html]]></link><description><![CDATA[4 Standard Tg 150℃, FR4-HighTg170℃, FR4- High Tg180℃, FR4- Halogen- free, FR4- Halogen- Free&amp;High-Tg
Board thickness0.4mm-5.0mmBoard sideMin 6*6mm Max 600*700mmMin.drilled hole size0.25mmMin.li]]></description><pubDate><![CDATA[20230426]]></pubDate></item>
<item>
<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[4 layersMIN Line width(mil)3mil4milMIN Line space(mil)3mil4milMin via (mechanical drilling)Board thickness≤1.2mm0.15mm0.2mmBoard thickness≤2.5mm0.2mm0.3mmBoard thickness＞2.5mmAspect Ration≤13]]></description><pubDate><![CDATA[20240131]]></pubDate></item>
<item>
<title><![CDATA[Printed Circuit Board]]></title><link><![CDATA[https://greenstone23.en.ec21.com/Printed-Circuit-Board--11778431_11889762.html]]></link><description><![CDATA[There is a wide range of printed circuit manufacturing
services offered by GreensTone. We specialize in manufacturing kinds of PCBs such as FR4 PCB, heavy copper PCB, HDI PCB, High-TG PCB, multi-laye]]></description><pubDate><![CDATA[20240117]]></pubDate></item>
<item>
<title><![CDATA[Good Working PCBA  for Electronics]]></title><link><![CDATA[https://finest202104.en.ec21.com/Good-Working-PCBA-for--11370329_11384176.html]]></link><description><![CDATA[4mil/4mil 
Inner Layer Cooper Thickness
0.5OZ-3OZ
Out Layer Copper Thickness
0.5-4OZ
Hole Position Tolerance
+-0.076mm
Blind Hole/Buried Plate
YES
Surface Finish
HASL, ENIG,Immersion silver,immersion]]></description><pubDate><![CDATA[20230519]]></pubDate></item>
<item>
<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[4mil, 3mil - laser drill
Min Drilling Hole Diameter
6mil, 4mil - laser drill
Other Techniques
Flex-rigid combination 
Via In Pad 
Buried Capacitor (only for Prototype PCB total area ≤1m²)
More inf]]></description><pubDate><![CDATA[20231206]]></pubDate></item>
<item>
<title><![CDATA[Loudspeaker PCB]]></title><link><![CDATA[https://techighpcb.en.ec21.com/Loudspeaker-PCB--11812588_11812591.html]]></link><description><![CDATA[hole boards, and half-hole craft boards, bonding craft boards, buried copper blocks, etc.Now key parameters of our company processed products are as follows:
Layer
4L
Copper thickness
Inner 2OZ,outer]]></description><pubDate><![CDATA[20230628]]></pubDate></item>

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