塑料玩具行业的,各位前辈帮忙翻译下: each piece of gadget must be packed in welded mini-bags (either flowpack or 3-sides-pre-heatselaed) made of opp mb 777 material by mobil plastics company or equivalent. material film must he a thickness between 23 and 45 μm, moreover it must weight between 20 and 40 gr/sqm.