Tips:This page [Multi-layers Aluminium , FR4 Double Sided PCB Immersion Tin , OSP(Entek) Finishing] infomation provided by [Shenzhen XingdaYun Technology Co., Ltd.] ,the enterprise is responsible for the authenticity, accuracy and validity of the information content. www.tradeleo.com do not assume any guarantee of joint and several liability. A safe way to suggest that the two sides trade, to ensure the interests of both sides.