蓝海新材料取得化学亚胺化法聚酰亚胺薄膜及其生产系统和工艺专利

Group 1 - Blue Ocean New Materials (Tongzhou Bay) Co., Ltd. has obtained a patent for "Preparation of Polyimide Film by Chemical Imidization Method and Its Continuous Production System and Process" with authorization announcement number CN120900545B, application date September 2025 [1] - Blue Ocean New Materials was established in 2024, located in Nantong City, primarily engaged in the petroleum, coal, and other fuel processing industries, with a registered capital of 800 million RMB [1] - The company has participated in 624 bidding projects and holds 6 patents, along with 16 administrative licenses [1] Group 2 - China National Petroleum Corporation (CNPC) was established in 1990, located in Beijing, primarily engaged in oil and gas extraction, with a registered capital of 48.69 billion RMB [1] - CNPC has made investments in 111 companies, participated in 5000 bidding projects, and holds 1446 trademark records and 5000 patent records, along with 28 administrative licenses [1] Group 3 - China Kunlun Engineering Co., Ltd. was established in 1986, located in Beijing, primarily engaged in civil engineering and construction, with a registered capital of 60.02 million RMB [2] - The company has invested in 5 enterprises, participated in 5000 bidding projects, holds 367 patents, and has 14 administrative licenses [2]