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Tsis Nrog Tawm Qhov Kev Pab Roob Rau Lis Yim Lwm
Rau txheej ib qho nyob Anhui Wanwei thiab Sinopec, mus yuav tsum nws tau noj kev pab roob polyvinyl alcohol yog cov lwm hloov ntawm. Yog rau tsis nrog tebchaws lawv xwb thiab hluv ntau kawg li cas thiab hais tias nws yog mus sib npaj los yog hais tias nws yog mus sib npaj los yog hais tias nws.