679棋牌官方下载

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      1. petrochina

        The Company's chemical products are marketed directly or indirectly through a network of sales personnel and agents dedicated to its chemical operations. Currently, the Company has six sales and technology centers in Daqing, Lanzhou and Urumchi, etc., each responsible for marketing and after-sales services of plastics, fibers, rubbers, fertilizers, organic chemical materials and catalysts, additives and other products.

        The Company holds and operates an oil and gas product pipeline network and storage system covering 26 provinces, municipalities and autonomous regions across China. As the largest oil and gas storage and transportation service supplier in China, the Company is engaged in transmission and marketing of natural gas, transportation and storage of crude oil and oil products and other businesses.

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