Polystyrene and polypropylene are the two plastic materials generally used for battery parts . 聚苯乙烯和聚丙烯是一般用于电池部件的两种塑料。
Different grades of crystal polystyrene molding pellets range from 150, 000 to 350, 000 weight average molecular weight . 不同牌号的结晶聚苯乙烯模塑粒料平均分子量范围从150,000-350,000。
Waterproof paints from waste polystyrene foam plastics 废聚苯乙烯制取涂料的研究
Moulded polystyrene foam board for thermal insulation 绝热用模塑聚苯乙烯泡沫塑料
Cellular plastics . polystyrene foam for thermal insulation 隔热用聚苯乙烯泡沫塑料