INTERNATIONAL PATENT: CHINA PETROLEUM & CHEMICAL CORPORATION, 中国石油化工股份有限公司, SINOPEC (BEIJING) RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD., 中石化（北京）化工研究院有限公司 FILES APPLICATION FOR "DEGRADATION-CONTROLLABLE TEMPORARY PLUGGING AGENT AND PREPARATION METHOD THEREFOR, DEGRADATION PERFORMANCE REGULATION AND CONTROL METHOD AND USE"

GENEVA, May 17 -- CHINA PETROLEUM & CHEMICAL CORPORATION (22A Chaoyangmenbei 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 (BEIJING) RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CO., LTD. (No.14, Beisanhuan East RoadChaoyang District, Beijing 100013), 中石化（北京）化工研究院有限公司 (中国北京市朝阳区北三环东路14号) filed a patent application (PC...