I am trying to locate suitable manufacturers in China to produce a steel construction product that I have developed. The product is a hidden internal anchoring system designed to attach wooden 4x4 railing posts to outdoor surfaces such as concrete, fiberglass, or wooden decks. It is also used for stair rail posts. I am looking for a proven, reliable, experienced manufacturer that has produced products for the North American market before. The successful company must specialize in working with sheet steel, bending, punching and