What technologies of Sinopec have achieved a number of core technological innovations and filled the gaps in related fields in China?

Dear, recently, the key scientific research projects "Development of recycle gas compressor for polyolefin plant" and "Development of ethylene refrigeration compressor for 800,000 tons/year ethylene plant" jointly completed by Engineering Construction Co., Ltd., Ningbo Engineering Company, Wuhan Petrochemical Company, Qilu Petrochemical Company, Shenyang Blower, Hangzhou Steam Turbine and Hefei General Technology Research Institute passed the technical appraisal organized by China Petrochemical Company. The successful development of the two units has achieved a number of core technological innovations, filled the gaps in domestic related fields, and the overall technical indicators have reached the international advanced level, which has remarkable economic and social benefits.