I-Upstream inesityalo se-styrene esiziitoni ezingama-600000 esinemithombo yezinto eziluhlaza ezizinzileyo;
I-PS isebenzisa iinkqubo eziphambili zemveliso ezinemveliso yonyaka yeetoni ezingama-400000, ibekwe phakathi kwezintlanu eziphezulu kumandla emveliso yasekhaya yaseTshayina;
Imigca yemveliso emi-4, ucwangciso lwemveliso oluguquguqukayo, amaxesha ambalwa okutshintsha, kunye nomgangatho ozinzileyo;
Qasha iinjineli eziphezulu ezinemivuzo ephezulu, izakhono ezigqwesileyo kunye namava atyebileyo;