we are professional supplier for 5n/6n/7n copper, copper ingot, copper pellets, copper rod, we also supply copper back plate and copper alloy.
We have 13,000 workshops, 4,000 are 1000,000-level cleaning rooms for purification, 1000 are for 300,000-level cleaning rooms for packaging. Currently Cowin Semicon has plants with 1000 tons designed capacity per year.
