厂家供应铜带铜皮接地态高精紫铜带t2t3半硬软铜带t2紫铜箔分条

t1t2紫铜带c1100软态接地紫铜皮止水压延紫铜带条铜带精密分无氧

厂家c1100紫铜箔软变压器0.150.1*250mm紫铜带态铜带红铜皮