1.??????????:
????? ??? ?????????
??????
????????????? ???????
2.???????:
?????? ??? ???????
?????????????? ???????
3.?????????? ????????:
PE, PE,PE
PP, PP, PP
PA, PA, PA
PET, PET, PET
PBT, PBT, PBT
PMMA, PMMA, PMMA
PS, PS, PS