Zopangira zopangira komanso katundu wa pulasitiki wamatabwa wa PVC.PVC mtengo ufa ndi matabwa CHIKWANGWANI ndi inorganic kudzaza (calcium carbonate), lubricant, stabilizer, thovu agent, thovu regulator, tona ndi zina zowonjezera (pulasitiki, toughening agent, coupling agent), etc. 1, utomoni domest...
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