Izihlangu zesikhumba se-High Density Polyethylene zisakhiwe ukuzinikela ukusebenza kakhulu emizini engapheliyo. Umsebenzi wokwenza zisifunda ngokusebenzisa izindlela zokuphuma ezibalulekile ekwakhiweni okunika ubukhulu bokubaluleka kwezinhlobo zezihlangu zokuphuma noma zokuthi zingaphezulu kwezinhlobo zokuthi zingaphezulu, okunika ubukhulu obungaphezulu nobuhle obungaphezulu. Ngokusebenzisa indawo yekhanda yamakhanda e-13,320 emishini yesikili, i-Baishunxing Pipeline Industry Co., Ltd. isebenza ngokusebenzisa izinto ezibalulekile zokusebenza ukwenza izihlangu zesikhumba se-HDPE ozokufanele amaqembu aseNingizimu Afrika. Ukuthi sithemba kubukhulu kuyaboniswa ngokusebenzisa izindlela zokuzilungisa okuphambili okunika ubukhulu bokubaluleka nokubaluleka kwesikhumba sokuthi singaphezulu. Emhlabeni wonke, izihlangu zethu zisetyenzisiwe emizini eyodwa, futhi zisetyenzisiwe kwi-municipal water supply, kwi-agricultural irrigation, kanye ne-environmental protection, okubonisa ubukhulu bokubaluleka nokusebenza kwazo.