... anchor bolt, nail, other off-standard fasteners and following to the drawers of products, which are according to the international ... (China), UNI, JIS (Japan), ISO and TCVN (Vietnam).1.Application:railways, highways, bridges, plants,etc. 2.Certificate:ISO9001:2008. 4. ... equipment as follows: High strength nexagon boits,nuts and wasners of ANSI standars with iargehead,nutsand washers for steel structrue ...