... E40 3.15A 300V Energy saving E40 die-casting aluminum lamp holder die-casting lamp holder,spotlight base 1. Material: high-pressure ... Maxofei Electrical Appliances Co., Ltd started its business from porcelain lamp holders, now more than 12 years development, we have ... our factory with 300 workers, products are also expand to lamp holder, plug, socket, extension socket, lighting, energy saving lamps ...