JZNEE.JZNEE was established in 2001 with headquarters in Shanghai. Its products are widely used in automotive, construction machinery, railways, urban rail transit, bridges, aviation, and other sectors, and have been successfully applied in major national projects such as the Qinghai-Tibet Railway, maglev projects, Donghai Bridge, Hangzhou Bay Bridge, and Qingdao Sifang Bombardier high-end passenger cars. Centered on its Spirax® anti-loosening thread technology, the company possesses comprehensive R&D and manufacturing capabilities encompassing nuts, threading tools (taps, gauges), tapping equipment, and inspection instruments. It holds a world-leading position in the application, manufacturing, testing, and technical research of anti-loosening thread products. JZNEE obtained ISO 9001:2000 quality system certification from the Hong Kong Quality Assurance Agency in 2003 and passed the TS16949:2002 quality system certification from Bureau Veritas in 2009. Its primary products include anti-loosening nuts, self-locking nuts, and locking nuts.