Xyoo twg lawv pib siv PVC rau cov kav dej phwj tuaj?
Xyoo twg lawv pib siv PVC rau cov kav dej phwj tuaj?

Video: Xyoo twg lawv pib siv PVC rau cov kav dej phwj tuaj?

Video: Xyoo twg lawv pib siv PVC rau cov kav dej phwj tuaj?
Video: Saib Xyoo 2022 | Saib Hmoov 12 Tug Tsiaj 2024, Kaum ib hlis
Anonim

1936 – Cov kav dej PVC pib yuav tsum tau teeb tsa rau kev faib cov dej haus nyob hauv tsev thiab cov kav dej khib nyiab (Lub Tebchaws Yelemees). Feem ntau tseem tab tom ua haujlwm. 1949 - Thawj zaug siv PVC cev hauv North America. Xyoo 1952 - PVC cev tau qhia hauv Asmeskas

Hauv qhov no, thaum twg lawv pib siv PVC rau cov kav dej?

PVC cev pib tau tsim nyob rau hauv 1940s thiab tau dav siv rau Ntws -Txhua-Vent kav dej thaum rov tsim kho lub Tebchaws Yelemees thiab Nyij Pooj tom qab Tsov Rog Zaum Ob.

Ib yam nkaus, koj puas tuaj yeem siv PVC rau cov kav dej phwj tuaj? Dej Kab Ua los ntawm Yas PVC Yeeb Nkab Polyvinyl Chloride ( PVC ) kav yog hom ntau tshaj plaws cov kav dej phwj tuaj hnub no Cov yeeb nkab yas yog qhov hnyav, yooj yim rau siv , thiab muaj zog. Thaum teeb tsa kom raug, PVC cev yog qhov ua tau ntev thiab tsis tuaj yeem nkag mus rau hauv paus.

Ib yam nkaus, ntev npaum li cas cov kav dej PVC kav ntev?

100 xyoo

Thaum twg siv cov kav dej av nplaum?

Av nplaum yog ib qho ntawm cov ntaub ntawv kav dej qub tshaj plaws hauv ntiaj teb thiab hauv qee qhov chaw, nws tseem nyob siv hnub no Hauv Tebchaws Meskas, nws yog cov khoom siv xaiv los ntawm 1880s txog rau 1900s. Zoo li cib thiab pobzeb, av nplaum yog hnyav thiab thauj nws nyuaj, yog li ntau lub nroog muaj lawv tus kheej av nplaum nroj tsuag.

Pom zoo: