Shirkadaha wax soo saarka ee kalsiyum carbide ee gudaha ee kalsiyumku waxay si xoog leh kor ugu qaadaan istiraatijiyadda horumarinta dhaqaalaha wareegtada, ballaarinta iyo xoojinta silsiladda warshadaha ee leh kalsiyum carbide PVC xudunta u ah, waxayna ku dadaalaan inay dhisaan koox warshadeed oo ballaaran oo isku dhafan "dhagaxda-korontada-milixda" Waqtigan xaadirka ah, ilaha alaabada vinyl vinyl ee Shiinaha ayaa ku soo koraya jiho kala duwan, taas oo sidoo kale furay waddo cusub oo loogu talagalay soo iibsiga alaabta ceeriin ee warshadaha PVC. Dhuxusha gudaha-ilaa-olefins, methanol-to-olefins, ethane-to-ethylene iyo hababka kale ee casriga ah ayaa ka dhigay sahayda ethylene mid aad u badan.
