Sou Hu Cai Jing·2026-02-05 07:45Group 1 - The core point of the article highlights that China National Petroleum Corporation (CNPC) has applied for a patent for a device aimed at improving the efficiency of paint removal in train tank cars, indicating innovation in grounding technology [1] - The patent, titled "A Static Grounding Clamp and Method for Improving Paint Removal Efficiency," includes components designed to enhance the piercing force of the device, ensuring reliable grounding and reducing potential static electricity hazards [1] - The company has a significant history, established in 1999, with a registered capital of 18,302,097,000 RMB, and has invested in 1,298 enterprises, showcasing its extensive involvement in the oil and gas sector [2] Group 2 - CNPC has participated in 443 bidding projects and holds 5000 patent records, indicating a strong focus on innovation and competitive engagement in the industry [2] - The company also possesses 38 trademark records and 168 administrative licenses, reflecting its comprehensive operational framework and regulatory compliance [2]