Company Introduction: KINGPO is a testing and inspection equipment manufacturer. We aim at provide best precision measuring instrument and excellent testing equipment. We believe quality speak louder than words. All products manufactured accord to international standards, say VDE standard, EN standard, IEC60061 standard, IEC60884, GB1002, UL498, UL1278, BS1363 and so on. Provide calibration certificate issued by accredited and internationally recognized laboratory. Many famous international certificate and inspection laboratories keep good business relationship with us. Our clients wide spread over the world. Main product covering: kinds of gauge for lamp cap and lamp holder�standard gauge for socket and plug, standard testing equipment, inspection instrument and measuring implement.