Wholesale Price China Metal Core Pcb - China New Product Allwinwin FLB01 Flex Bar – Yongmingsheng

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We have a highly efficient group to deal with inquiries from clients. Our target is “100% customer gratification by our solution top quality, price & our crew service” and delight in a great track record between purchasers. With lots of factories, we can easily present a wide variety of TPE Ridged Amazon Hot Flexbar Exercises Resistance Tennis Elbow Golfer Flexible, For more than ten years experience in this filed, our company has gained high reputation from home and abroad. So we welcome friends from all over the world to come and contact us, not only for business, but also for friendship.

Immersion Gold

The optimal process conditions were as follows: gold salt concentration (in gold terms)1g/L, organic amine concentration 0.2 mol/L, citric acid 5g/L, operating temperature 50-60℃, solution pH value 9 ~ 10, time control in 5-10min. Under this condition, the effect of chemical deposition is stable, and the color, uniformity and binding force of the deposited gold layer can meet the technical requirements of PCB industry. There is a Study suggests that mainly containing gold chloride acid and organic amine component without cyanide plating liquid system, not only from a technical point of view to meet today’s requirements of PCB industry to the chemical zedoary process, and from an environmental point of view to achieve the replacement of highly toxic chemicals, can significantly reduce the harm to environment, is a kind of has a broad application prospect of environmental friendly process.