Stiefel (Guangdong) Energy Environmental Protection Engineering Co., Ltd. e tala atu i mea faʻatupu matagofie loa mo le faʻatatau anafe o le vaega faʻatatau. O ni mea faʻatupu, e ai se nozeli, vale, mea afioga upu, ma le tausaga fua, e aoao i le faiga lelei ma le tofā lelei o le mea faʻatupu, e faia lea i le tamaʻitaʻi ma le totonu lelei mai le mea faʻatupu ua maua, e faʻamanatuina lea le faʻamauaina ma le faʻalavega lelei. E faia lea i le mea lelei faʻamafanafana, e faʻatasi lea i le mālō ma le kokaʻe, ma le mataʻutauta lelei, e manaʻo lea le taimi faʻamafai. O le mea faʻatupu e faia i le faiva tuai lelei, e ai se le tusi faʻasino ma le faʻamafai lelei, e faʻamanatuina lea le faʻamafai ma le faʻamafai lelei o le aofai. E le galuega lava lea ona faʻamafai ma le faʻamafai lelei, e le galuega lava ona faʻamafai ma le faʻamafai lelei, e le galuega lava ona faʻamafai ma le faʻamafai lelei.