1) Applicable to PCB, LCD, SMT, clean room 2) Sizes: 1", 2", 4", ... , copper breadcrumbs, dust, etc, so as to improve the yield of electronic products.1) Applicable to breadboard, PCB, LCD, SMT, clean room ... : high, middle, low stickness available.5) Stable raw meterial, that attests to durability, no ageing, no crumbs, antistatic, moisture resistance, damp-proofing ...