Nanjing Tongchang Environment Tech Co., Ltd. na faavaeina i le 2018, o loʻo i Nanjing, JiangSu Province, o loʻo i totonu o le Shanghai Economic Circle.O la matou pisinisi autu o le gaosiga ma le fa'atauina o mea faigaluega fa'amamāina o le ea ma vai ma a latou mea fa'aoga lagolago.