TD DITE.TD DITE was established in 1985 with a registered capital of 30 million yuan and holds independent export rights. For over 30 years, the company has specialized in the research, production, sales, and service of high-strength bolts, nuts, washers, and their assemblies. Headquartered in Wenzhou, Zhejiang Province, TD DITE's products serve industries including construction machinery, petrochemicals, tower machinery, lifting equipment, mining machinery, railway tracks, hydraulic pumps and valves, wind and nuclear power, automotive manufacturing, bridges, and shipbuilding. TD DITE operates multiple specialized production lines for high-strength bolts, including cold heading, hot forging, heat treatment, and surface finishing, alongside intelligent visual workshops. Its enterprise testing center, certified at the provincial level, conducts rigorous inspections including chemical analysis, mechanical testing, physical inspection, non-destructive testing, and corrosion resistance testing. TD DITE obtained ISO 9001 quality management system certification in 1999, followed by AP1 20E BSL-3 certification, ISO 14001 (environmental management system) certification, ISO 45001 (occupational health and safety management system) certification, and corresponding grade certificates. Primary products include: track bolt blade tooth block bolts, petroleum bolts, wind power bolts, standard bolt series, tower crane bolts, breaker bolts, loader bolts, and non-standard special-shaped bolts.
