brown 25kv composite insulator 1.type:composite insulator 2.color:Brown 3.voltage:33kv,20kv,25kv,11kv 4.competition price Porcelain insulator 1.Type: insulator 2. Material: porcelain 3. Export market: North America, South America, Middle East, Southeast Asia, Africa, Europe, etc.4. Usage : Decorate lighting and as lamps accessories 5. Package: Paper packing and as your requirements6. Payment: T/T ...