- Business
- Changzhou Langbo Sealing Technologies Co., Ltd. researches, develops, designs, produces, and sells precision seals, rubber and plastic products, metal processing parts, and precision cavity molds primarily for the automotive sector in China. The company's core products include automotive O-rings and gaskets; shaft seals; wheel hub assemblies; oil seals; membranes; auto turbo tubes; automotive fuel system seals; auto gearbox and fuel tank seals; automobile engine oil seals; automobile brake system rubber parts; automotive brake booster rubber parts; automotive lamp system rubber parts; automobile power steering system rubber parts; automotive brake master cylinder seals; automotive air conditioning rubber parts and seal assemblies; shaped seals; dust covers; shock pads; pipe joints; and jackets, with additional offerings for railway applications such as sleeper pads, bogie system elastic positioning sleeves, and motor air duct rubber parts, as well as engineering machinery rubber products and aviation series rubber products. Founded in 2005 and headquartered at No. 1, Jinbo Road, Yaotang Street, Jintan District, Changzhou, Jiangsu Province, China, the company operates mainly within the domestic market, serving major customers including Huayu Sanyadian, Nanjing Otek, Chongqing Jianzhu Motorcycle, SAIC General Motors Wuhan branch, and SAIC Motor Corporation Limited. In recent developments, Gongqingcheng Junshan Investment agrees to acquire a 26% stake from existing shareholders Qi Jianguo, Fan Xiaofeng, and Changzhou Langbo Sealing Technologies, marking a significant ownership transition. The company reports robust financial performance, with 2025 first-quarter net income rising 100.9% year-over-year to 10.3 million yuan on 28.8% revenue growth, and anticipates 2024 full-year net profit growth of 37% to 52%, driven by new energy vehicle fund contributions and operational enhancements. Langbo Sealing Technologies also releases its 2025 semi-annual report, reflecting continued expansion in automotive rubber parts amid strengthening profitability.