indwangu yenziwa ngemicu eqinile ye-polypropylene, enezinzuzo zokumelana ne-acid ne-alkali, ukumelana nokuguguleka, ukuguga, amandla amakhulu, usayizi ozinzile nokugcwaliswa okuhle njll.I-PP + PE Ayikho indwangu ephothiwe, i-class1, Izinto ezilahlwayo zendwangu yezokwelapha: Isetshenziselwe ukuhlukaniswa okujwayelekile egumbini lokuhlola lesiguli esingalaliswayo kwizikhungo zezokwelapha