INTERNATIONAL PATENT: CHINA PETROLEUM & CHEMICAL CORPORATION, 中国石油化工股份有限公司, SINOPEC SOUTHWEST OIL & GAS COMPANY, 中国石油化工股份有限公司西南油气分公司 FILES APPLICATION FOR "ACID-SOLUBLE NANO MATERIAL AND PREPARATION METHOD THEREFOR AND USE THEREOF AND FRACTURING FLUID"

GENEVA, Aug. 9 -- CHINA PETROLEUM & CHEMICAL CORPORATION (No. 22 Chaoyangmen North StreetChaoyang District, Beijing 100728), 中国石油化工股份有限公司 (中国北京市朝阳区朝阳门北大街22号), SINOPEC SOUTHWEST OIL & GAS COMPANY (No. 688 Jitai Road, Hi-Tech Industrial Development ZoneChengdu, Sichuan 610041), 中国石油化工股份有限公司西南油气分公司 (中国四川省成都市高新区吉泰路688号) filed...