Hengda Industrial Group Limited is a comprehensive manufacturer and exporter with professional R&D, production and marketing staff. It's made up of Shanghai Hengda Electric Manufacture Co.,Ltd, Shanghai Liuyue Nachen Machine Co.,Ltd, Bona valve Co.,Ltd. The main products include ignition coils, drywall tools and solenoid valves. All products are exported to Europe, North America, Australia, Japan and other countries. We're aiming to seek sincere cooperation and mutual development with all personalities from all over the world.