6337 leaded solder paste QFN with silver SMT chip solder paste LED solder paste tin clay manufacturers wholesale Sn63Pb37

We are mainly engaged in the research, development and production of solder paste, tin ball, electronic flux, industrial cleaning agent, lead-free solder wire, solder bar, solder sheet, and insulating varnish. The sales network covers all provinces of China and more than ten countries and regions in the world.