I-Upstream ine-600000 yetoni yesityalo se-styrene esinemithombo yemathiriyeli ekrwada ezinzileyo;
I-PS ithatha iinkqubo ezikhokelayo zemveliso kunye nemveliso yonyaka yeetoni ezingama-400000, ibekwe phakathi kwezintlanu eziphezulu kumthamo wemveliso yasekhaya yaseTshayina;
Imigca emi-4 yokuvelisa, ukucwangciswa kwemveliso eguquguqukayo, amaxesha ambalwa okutshintsha, kunye nomgangatho ozinzile;
Ukuqesha iinjineli eziphezulu ezinemivuzo ephezulu, izakhono ezibalaseleyo kunye namava atyebileyo;