Bojing Plastic Mould Company was established in 1998 , specializes in producing all kinds of accessories of film blowing machine , such as single-layer, multi-layer,and one to seven layerof Die head,the raw plastic is HDPE, LDPE, LLDPE, MDPE, MHDPE, PP,PVC,EVA,PA,EVOH,TIE and so on. Except for extrusion components, our factory also manufactures air rings, rotating seats, filters,manual screen changers .