Qhov Kev Sib Txhuam Ntawm Xim thiab Kev Zoo ntawm PPR Tube

Peb feem ntau pom PPR tube rau dawb, ntsuab thiab grey, qee leej neeg hais tias cov yeeb nkab tsis muaj kuab, tsis muaj kuab lom, muaj qee leej xav tias gray raj txhuam raj, tsis xav siv, qhov tseeb cov yeeb nkab tsis yog nyob ntawm seb nws qhov tsos, xim, thiab kev ntxim nyiam zoo nyob ntawm nws. Qhov sib txawv xim, xim ntsuab los yog xim xim, yog lub tuam txhab raws li cov kev cai thiab cov kev xav tau tshwj xeeb ntawm cov neeg siv, dawb, ntsuab los yog grey colour masterbatch tau ntxiv hauv cov khoom siv raw, yog ua dawb, ntsuab, grey yeeb-tshuaj, ua rau muaj kuab lom nyob rau hauv cov ntsiab lus ntawm cov hmoov lead, cadmium, tin yeeb nkab hauv, mercury, VCM yog raws li lub teb chaws tus qauv, tab sis feem ntau qhov grey PPR ua tshiab tube, uas yog tsis scientific, tsis yog qhov chaw ntawm cov khoom siv tau hloov tshiab, xim, tsos nqaij daim tawv yuav tsum yog qee tus zauv ntawm cov tuam txhab tuaj yeem ua rau kom muaj xim, tob zuj zus, tsos lossis hnav ris tsho, grey los sis dub, tiam sis tsis paub tseeb leej twg yog grey, cov yeeb nkab dub yas yeeb nkab raj. Hais lus tsis meej, tsis muaj xim tsis cuam tshuam rau cov khoom siv ntawm PPR yeeb nkab.