6 TPI yo gukata vuba cyane mubiti nibikoresho bya plastike bya PVC. Ibara: Umweru urashobora guhindurwa. Umubiri muto kugirango byoroshye gutangira kandi bigoye-kugera kubisabwa. Impamyabumenyi ya dogere 5 yo kugabanuka byihuse, kuramba no gukora neza muri rusange. Impanuro yagenewe gukata byoroshye mu biti na PVC / plastiki. Gukata neza ibiti hamwe nicyuma.