亚洲最大福利网站_4hu四虎永久网址_麻豆国产原创_国产成人av一区二区

Manufacturer high elongation copper cathode 99.999%~99.9999% purity at the cheap price
copper alignment pole, used for the preparation of electronic packaging with bonding line and high quality audio line .
3. GDMS test for our Cu 99.9999%
High purity copper chemical composition analysis is tested through glow discharge mass spectrometry (GDMS).

12/23 11:19