... with a silane-based size and compatible with PP, PA, PBT, PET etc. Fiberglass chopped strands for engineering plasticFiberglass chopped strands ... they are designed for reinforcing PP, PA, AS/ABS, PET, PBT, POM, PPS and PC.SpecificationLength:3mm, 4.5mm, 6mm,etc ... sizing properties and good boning between chopped strands and matrix resin.2. Excellent integrigy and dry flowability, good moldability and ...