SOFE(SZ:000852) Sou Hu Cai Jing·2026-01-26 06:18Group 1 - The State Intellectual Property Office of China shows that Sinopec Four Machine Petroleum Machinery Co., Ltd. and Sinopec Petroleum Machinery Co., Ltd. have applied for a patent titled "A Polymer Powder Mixing Test Device and Test Method," with publication number CN121372138A and application date of September 2025 [1] - The patent describes a test device that includes a clear water tank, a mixer module, and a liquid storage tank, with multiple mixers arranged in parallel, allowing for selective testing of different mixing effects [1] - The invention aims to optimize the mixing concentration, output, and uniformity of the mixers by testing them individually or in parallel [1] Group 2 - Sinopec Four Machine Petroleum Machinery Co., Ltd. was established in 2012, located in Jingzhou, primarily engaged in the automotive manufacturing industry, with a registered capital of 600 million RMB [2] - The company has participated in 5,000 bidding projects and holds 678 patents, along with 85 administrative licenses [2] - Sinopec Petroleum Machinery Co., Ltd. was founded in 1998, located in Wuhan, focusing on specialized equipment manufacturing, with a registered capital of approximately 955.67 million RMB [2] - This company has made investments in 15 enterprises, participated in 1,803 bidding projects, and holds 1,805 patents, along with 25 administrative licenses [2]