Ko Hunan Huanda Co., Ltd. te kaiarahi hou i roto i nga kaihoko umanga kei Haina. Neke atu i te 20 tau o to maatau wheako whakawhanake, whakangao, whakamatau, hokohoko me te tohatoha kaitoha hikoi i Haina me tawahi, ina koa i te Waenganui rawhiti, Inia, te US Ko ta maatau putea hua kei roto i nga kaitautoko o te waikura konutea, nga kaiwhakatautau waikura desulfurization, waro whakahohe kaiwhakaputa desulfurization, COS kaiwhakakōkihi hydrolysis, hāora-tango ngatata, etc.