Super Purchasing for 3mil Printed Circuit Boards - China Wholesale Shenzhen Custom Rigid-flex Printed Circuit Boards – Yongmingsheng

Sticking towards the theory of “Super Good quality, Satisfactory service” ,We are striving to become a superb business enterprise partner of you for China Wholesale Shenzhen Custom Rigid-flex Printed Circuit Boards, We have been one of your largest 100% manufacturers in China. A lot of large trading businesses import products and solutions from us, so we can easily give you the most beneficial price tag with the same quality for anyone who is interested in us.
Sticking towards the theory of “Super Good quality, Satisfactory service” ,We are striving to become a superb business enterprise partner of you for Printed Circuit Boards, Rigid-Flex, Shenzhen, As an experienced factory we also accept customized order and make it same as your picture or sample specifying specification and customer design packing. The main goal of the company is to live a satisfactory memory to all the customers,and establish a long term win-win business relationship. For more information,remember to contact us. And it’s our great pleasure if you like to have a personally meeting in our office.
Immersion Gold

Immersion Gold is the method of chemical deposition, through the chemical REDOX reaction to generate a layer of coating which is generally thick, is a chemical nickel gold layer deposition method, can achieve a thicker gold layer.

The process of Immersion Gold on the surface of printed circuit is characterized by stable color, good brightness, smooth coating and good weld ability. Basically, it can be divided into four stages: pre-treatment (oil removal, micro-corrosion, activation and leaching), nickel precipitation, gold precipitation, post-treatment (waste gold water washing,DI washing, drying), gold precipitation thickness between 0.025-0.1um.

Gold used in the surface treatment of circuit boards, because of its strong electrical conductivity, good oxidation resistance, long life, general applications such as keypad, gold finger board.

You May Like:

1、PCB Basics

2、Six frames, more than 100 inspection items, ensure PCB design no more mistakes

3、Definition and difference of gold deposit and gold finger in PCB board process