... universal switch is introduced, the first Italian technology and develop new products, small volume, and break through the transition, the ... functions, good insulation material, elegant, conversion, safe and reliable operation is flexible and novel style, etc. One GLE9-20, GLE9 ... existing LW2 LW6 LW8 LW5, and LW12, LW15, and HZ5, HZ10 HZ20, and various switch and the switch on imported equipment.