Qingdao sainuo ke k'hamphani ea lapeng e sebetsanang le r&d le tlhahiso ea boka ba Polyethylene, boka bo khethehileng bo fetotsoeng, EBS, Stearate le lihlahisoa tse ling tsa ho tlotsa le ho hasanya.Ho tloha ha ho thehoa k'hamphani ka lilemo tse fetang 10, e ikemiselitse ho nts'etsopele ea theknoloji ea tlhahiso ...
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