They manufacture the class of plastics known as thermoplastic materials.
他们生产被称为热塑材料的塑料类制品。
《柯林斯英汉双解大词典》
2
Firms engaged in the manufacture of plastics.
公司从事塑料制造业务。
3
It can also be turned into jet fuel, and it can be used as a raw material for the manufacture of plastics and many other chemicals normally derived from petroleum.