Hi my name is Keith ,I have designed a new Combination Lock and I am looking for a company to manufacture it,I have it designd on paper,on disk, and in 3D ,( Auto Cad ).I am looking to visit China Shanghai to visit one C'o approx 25 May but I want to visit more than one C'o , anyway I do want to produce 1 model made in plastic and 1 model in metal casing, so I will probably need 2 companys anyway to manufacture .What are your Design and build costs ,Die manufacture costs ,and lead time to make dies please .Regards Keith .