Sou Hu Cai Jing·2025-09-26 23:01Core Insights - China Petroleum (601857) has recently obtained a new invention patent titled "LDPE Resin for Coating Products and Its Preparation Method and Application," with the patent application number CN202111174750.7 and an authorization date of September 26, 2025 [1] - The patent addresses the issue of poor adhesion in existing low-density polyethylene (LDPE) used for coating products, enhancing the peel strength of the final product to meet the demands of paper-plastic products [1] Patent and R&D Summary - In 2023, China Petroleum has received a total of 1,112 patent authorizations, representing a decrease of 32.77% compared to the same period last year [2] - The company invested 9.899 billion yuan in research and development in the first half of the year, reflecting a year-on-year increase of 2.51% [2] - China Petroleum has a total of 32,708 patent records and 107 trademark records, along with 168 administrative licenses [2]