On October 18, 2022, Li Pilong, chairman of China Petroleum Technical Service Alliance, and Shi Fengcheng, Secretary General, were invited to visit Huizhi company. China Petroleum Technical Service Alliance is an oil and energy service group established by private enterprises, which has built a business system of the whole industrial chain in the fields of oilfield exploration and development and cooperative operation, petroleum engineering technical services, surface engineering design and construction general contracting, and petroleum equipment manufacturing.

Accompanied by Lv Yugang, general manager of Qingdao Huizhi Oilfield Service Co., LTD., and Wang Nan, manager of business management Department of Shandong Nuoer Biotechnology Co., LTD., the Petroleum Alliance delegation visited the company's polyacrylamide and absorbent resin production workshop. During the whole visit, the Petroleum Alliance listened carefully to the introduction of Manager Wang Nan and exchanged views on the application of polyacrylamide and absorbent resin in oil fields.

On the same day, the two sides held a symposium on the next step of cooperation. At the meeting, General Manager Lv Yugang introduced the discovery status and future planning of Nuoer Group and Huizhi to each other. The two sides conducted in-depth exchanges on issues such as single-well stimulation and block contracting. Chairman Li Pirong highly recognized Nuoer Group's decision to set up Huizhi, believing that oil and gas investment and technical services have great prospects for development. At the same time, we reached an agreement on giving full play to the market advantages of Nuoer Group's products, Huizhi service technology and China Petroleum Alliance, and jointly promoting the in-depth cooperation between the two sides in engineering and technical services, field management support and other fields. Qingdao Huizhi Oilfield Service Co., Ltd. and China Petroleum Technical Service Alliance reached a strategic cooperation intention, Huizhi Petroleum joined China Petroleum Alliance, and the two sides formed a long-term strategic partnership.