Polyvinyl Chloride, feem ntau hu ua PVC, ua lub luag haujlwm tseem ceeb hauv kev tsim cov xov hlau thiab cables thoob plaws ntau qhov chaw. AipuWaton, ib lub tuam txhab nrog cov kws tshaj lij hauv thaj tsam ntawm cov kab hluav taws xob ntxiv-tsawg-voltage tswj thiab cov txheej txheem c ...
Nyeem ntxiv