Nanjing KangDong Electronic Science And Technology Co., Ltd.
Main products:Electronic Components,Instrumentation,PCB
Contact Us
  • Contact Person : Mr. Robin Wong
  • Company Name : Nanjing KangDong Electronic Science And Technology Co., Ltd.
  • Tel : 86-25-52715080
  • Fax : 86-25-52715080
  • Address : Jiangsu,NanJing,Room206, No.6 LiMin West Road, ChangLu Street, YanJiang Industrial Development Zone,NanJing,China
  • Country/Region : China
  • Zip : 211500

best price high quality fr4 One-stop service for PCB and PCBA

best price high quality fr4 One-stop service for PCB and PCBA
Product Detailed
PCB Assembly 1.PCB&PCBA 2.ISO9001/TS16949/ROHS/UL 3.OEM PCB Assembly is welcome 4.High Quality,Reasonable Price&Best Ser

1.  KANGDONG PCB and PCBA Manufacture Capability



1.Base Material

FR-4 / High TG FR-4 / Lead free Materials (ROHS Compliant) / Halogen Free material /CEM-3/CEM-1/ /PTFE/ROGERS/ARLON/TACONIC



3.Finised inner/outer copper thickness


4.Finished board thickness



Board thickness≤1.0mm: +/-0.1mm

1<Board thickness≤2.0mm: +/-10%

Board thickness>2.0mm: +/-8%

5.Max panel size

≤2sidesPCB: 600*1500mm

Multilayer PCB: 500*1200mm

6.Min conductor line width/spacing

Inner layers: ≥3/3mil

Outer layers: ≥3.5/3.5mil

7.Min hole size

Mechanical hole: 0.15mm

Laser hole: 0.1mm

Drilling precision: first drilling

First drilling: 1mil

Second drilling: 4mil


Board thickness≤0.79mm: β≤1.0%

0.80≤Board thickness≤2.4mm: β≤0.7%

Board thickness≥2.5mm: β≤0.5%

9.Controlled Impedance


10. Aspect Ratio


11.Min welding ring


12.Min solder mask bridge


13.Plugging vias capability


14. Hole tolerance

PTH: +/-3mil

NPTH: +/-2mil

15.Outline profile

Rout/ V-cut/ Bridge/ Stamp hole

16.Surface treatment

OSP: 0.5-0.5um

HASL: 2-40um

Lead free HASL: 2-40um

ENIG: Au 1-10U’’

ENEPIG: PB 2-5U’’/ Au 1-8U’’

Immersion Tin:0.8-1.2um

Immersion silver: 0.1-1.2um

Peelable blue mask

Carbon ink

Gold plating: Au 1-150U’’

17. E-testing pass percent

97% pass for the first time,+/-2%(tolerance)

FQC-Physical Lab: Reliability tests


ROHS  UL:E327776  ISO9001:2008  IPC  SGS


Our equipments 

1.Drilling workshop

4 drilling bits of drilling machine: 4 sets

2 drilling bits of drilling machine: 2 sets

2. photo plotting workshop

Israel “ORBOTECH” Photo Plotters


AOI machine


“OXFORD” CMI 700 Copper Thickness Tester

5.Impedance test

USA “Tektronix” DSA 8200 Impedance Tester

6.Outline workshop

CNC routing machine: 7 sets

angle-cutting machine

V-cut machine


KangDong's advantage

1, Strong engineering support:


As we have our own PCB design teams, we can do design work for you or improve your designs accroding to your requiremenys. And if you have placed the volume order to us and your design is new and need to improve or revise in the actual application, our experienced engineers can offer you the strong support without charging any extra money.


2,Competitive prices:

We regularly stock over 5000+ common parts from quality manufacturers and cooperate with the world famous electronic components distributors like DigiKey, Mouser, Element14, Arrow, Avnet, Maxim and Future Electronics to guarantee our supply chain is smooth and serve both the urgent needs and common needs with fastest lead time and competitive price.


3, On time delivery:

We can do the on time delivery and shorten customers’ wait time, because:

1, We regularly stock over 5000+ common parts;2, We have the most professional sourcing team and cooperate with world famous electronic components distributors;3, We have our own PCB and PCB assembly factory;4, We have our own design team whom can help customs resolve the most sophisticated technical problems


4, Quality guarantee:

We guarantee that all the products we manufactured are 100% qualified and have at lest one year guarantee period, but the premise is that all the parts of the products are provided by us (including PCB, electronic components and assembly work). And for those products only partially services provided by us, we are only responsible for the liability of the services provided by us.



We treat all your information as highly confidential and maintain the strictest standards to protect your intellectual property rights (IP).The confidentiality of your information is protected with the following means and processes.

best price high quality fr4 One-stop service for PCB and PCBA

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