1. nice shape, feel very comfortable, open and close the sound altogether, the country's first-linking structure using asanas 2. panels and rear seat excellent material, the panel used in today's latest 304 stainless steel; backseat using advanced imported bulletproof plastic (PC material) improve the flame retardancy of products, long-term use is not easy deformation and discoloration 3. The selection of the composite silver switch contacts through current, complex silver contacts with low resistivity, conductivity, good benefits, while its anti-arc welding resistance and erosion performance is very good, and the wear resistance, high mechanical strength, long life 4. Selection qualities socket copper bronze production. 5. All switch socket plate made of imported steel material qualities, resistance to deformation, absolute power.