1. With automatic welding artwork, Strong construction, Good hermetic function. 2. Produced with high quality steel shell and can be installed in high pressure and high temperature system. 3. Can be produced as Customer's requirement and you can choose vertical type or horizontal type. 4. Surface corrosion resistant static electrical painting procedure protecting the shell from the rust. 5. Sturdy steel shells prolonged the life of product 6. Provide the high quality imported revoking stop valve or meltable safety valve.