BNBM OTAi Polymer Waterproof System (Tianjin) Co., Ltd. (formerly Tianjin Binhai OTAi Waterproof Material Co., Ltd.) was founded in 2010. Headquartered in the Tianjin Binhai New Area—a national strategic development zone—the company operates with a registered capital of RMB 110 million. In September 2021, OTAi underwent restructuring to become a state-owned enterprise, now affiliated with BNBM Waterproof Co., Ltd. It serves as a dedicated R&D and manufacturing base for high-end building waterproof materials under the BNBM Waterproof umbrella.
Currently, OTAi operates three polymer membrane production lines, one polymer coating production line, and one plastic modification production line. Its annual production capacity reaches approximately 15 million square meters of waterproofing membranes and 2,000 tons of modified pellets. The company’s product portfolio includes TPO waterproofing membranes, PVC waterproofing membranes, HDPE waterproofing membranes, bitumen waterproofing membranes, polymer-modified cementitious waterproof coatings, and prefabricated waterproofing products.
OTAi’s solutions have been widely applied in waterproofing projects across diverse sectors such as aerospace, high-speed rail, metro systems, exhibition centers, government buildings, healthcare facilities, industrial plants, and tunnels. Notable projects include the Hong Kong-Zhuhai-Macao Bridge Zhuhai Link, the Airbus Tianjin A330 Wide-body Aircraft Completion and Delivery Center, the New Generation Launch Vehicle Industrialization Base, and the National Convention and Exhibition Center (Tianjin).
Recognized as a National High-Tech Enterprise, BNBM OTAi has been honored with titles such as “Gazelle” Enterprise, “Specialized, Refined and New” Enterprise, and “Industry Leader.” The company holds certifications in quality management, environmental management, occupational health and safety, and green factory standards. Guided by the group’s “commanding heights” strategy, BNBM OTAi drives growth through brand building and technological innovation. By continuously advancing in technology and enhancing services, the company has earned trust and recognition from various industries, backed by strong brand competitiveness and influence.
