1.processed in Class 100 cleanroom 2.use pure PE resins 3.free from contaminants 4.No additives 5.customized ... are produced and processed in Class 100 modularcleanrooms using pure, high quality PE resins which are free from amides, silicone oiland phthalate esters ... -electronic, IC, SMT, PCB, medical field and biotech industries. Cleanroom PE Plastic Bag