Hot sale Factory Multilayer Rigid-Flex Board - Fast delivery 4 Layer Fpc ,Oem From – Yongmingsheng

We’ve been experienced manufacturer. Wining the majority of your crucial certifications of its market for Fast delivery 4 Layer Fpc ,Oem From, In addition, we would properly tutorial the purchasers about the application techniques to adopt our items plus the way to select appropriate materials.
We’ve been experienced manufacturer. Wining the majority of your crucial certifications of its market for 4-storey Fpc, Bga4 Layer Fpc, Flexible Four-layer Fpc, Looking forward, we’ll keep pace with the times, continuing to create new products. With our strong research team, advanced production facilities, scientific management and top services, we’ll supply high quality solutions to our customers worldwide. We sincerely invite you to be our business partners for mutual benefits.
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.