product mô tả
copper
standard
astm, aisi, jis, din, gb, en
grad
c10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, C10930,
C11000, C11300, C11400, C11500, C11600, C12000, C1200 NC14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, ...