http://pastport.jp/user/dtnut ja-JP As one of the biggest standard high-strength fastener manufacturer, DT have total 12 cold forming machines plus 4 hot forging production lines for different size of standard nuts and bolts. 2022-12-01T10:40:49+0900 http://pastport.jp/user/dtnut/timeline/Ningbo%20Datian%20Fastener%20Co.%2CLtd. dtnut http://pastport.jp/user/dtnut/timeline/Ningbo%20Datian%20Fastener%20Co.%2CLtd.