lesela le entsoe ka likhoele tse tloaelehileng tsa polypropylene, tse nang le melemo ea ho hanyetsa acid le alkali, khoholeho ea mobu, ho tsofala, matla a maholo, boholo bo tsitsitseng le ho ba le matla a mangata joalo-joalo.PP + PE Ha ho na lesela le lohiloeng, class1, Lisebelisoa tsa lesela la bongaka tse lahloang: ho itšehla thajana ka phapusing ea tlhahlobo ea bakuli ba kulang litsing tsa bongaka