Chinese wholesale Flexible Printed Circuit Board - Low MOQ for Order rigid-flex circuit board PCB manufacturing – Yongmingsheng

We thinks what buyers think, the urgency of urgency to act during the interests of a purchaser position of theory, allowing for much better high-quality, reduced processing costs, charges are more reasonable, won the new and outdated consumers the support and affirmation for Low MOQ for Order rigid-flex circuit board PCB manufacturing, We sincerely welcome overseas buyers to refer to for your long-term cooperation and also the mutual development.We strongly think that we can do better and far better.
We thinks what buyers think, the urgency of urgency to act during the interests of a purchaser position of theory, allowing for much better high-quality, reduced processing costs, charges are more reasonable, won the new and outdated consumers the support and affirmation for , We pay high attention to customer service, and cherish every customer. We now have maintained a strong reputation in the industry for many years. We’ve been honest and work on building a long-term relationship with our customers.

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.