Tengco is a C-TPAT and ISO9001:2015 certified importer and distributor of specialty forgings, castings, fasteners, nuts, and bolts. We have four distribution centers located throughout the United States, and our supplier network includes manufacturers in Japan, Taiwan, Korea, India and China that will help serve all of your custom part needs. We employ a precise quality assurance process at each step of the manufacturing process in addition to maintaining quality control inspection labs at each distribution center. Tengco ensures that your parts are made to exact specification and delivered on time.