Group 1 - The core point of the article is the procurement announcement by Sinopec (Henan) Refining and Chemical Co., Ltd. regarding the purchase of parts for the C701 Roots blower used in polypropylene drying [1][2] - Shandong Zhangqiao Blower Co., Ltd. has won the bid for the procurement project [1][2] - The procurement project was publicly announced on October 26, 2025 [2] Group 2 - Sinopec (Henan) Refining and Chemical Co., Ltd. is the buyer in this procurement [2] - Shandong Zhangqiao Blower Co., Ltd. has made investments in 43 companies and participated in 2,554 bidding projects [1] - The company holds 20 trademark registrations, 612 patents, and 30 copyright registrations, along with 24 administrative licenses [1]