GENEVA, July 7 -- XINJIANG DUSHANZI PETROCHEMICAL CO., LTD (No.6 Beijing Road, Dushanzi DistrictKaramay, Xinjiang 833699), 新疆独山子石油化工有限公司 (中国新疆维吾尔自治区克拉玛依市独山子区北京路6号), PETROCHINA COMPANY LIMITED (9 Dongzhimen North StreetDongcheng District, Beijing 100007), 中国石油天然气股份有限公司 (中国北京市东城区东直门北大街9号) filed a patent...
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