Challenge Hardware Incorporation is ISO-9000 certificated manufacturer specialize in below technical field :  Metal Hardware: Forging, Precision casting, Stamping, CNC machining, Robotic welding, Zinc / Aluminum die-casting...  Plastic Components: Blister pack designing, Plastic injection product and molding designing...  That would be highly appreciate, if you can send the sketch, drawing, specification or sample for price quotation.