If you know nothing in science or engineering , you are just going to humiliate yourself to carry this argument on and on. Stop it now!!!
Ok, tell me why the quality is so much better now!
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• 1系是纯铝,8系是合金。铝箔目前只有1系和8系能轧到6个微米。一般用户要求轧3003,但是3003只能轧单张铝。 -blanchill- ♀ (0 bytes) () 08/11/2016 postreply 06:58:42