... stainless steel, aluminum, copper, zinc, etc. ) and some non-metals (plastic, PMMA, etc. ) Applicable Products and Industries: IC, keyboard, clock, lock ... warranty list. After the warranty, we still provide lifetime service. Q: What's package? A: We have 3 layers package. ... For the inside layer, the machine is covered by waterproof plastic bag. Q: What's delivery time? A: Generally speaking, lead time ...