LONGi Meter Co., Ltd., founded in 1968, is the birthplace of China’s first electronic watt-hour meter. After more than 50-year development, the company has become a national high-tech enterprise, supplying series of products including energy/water/gas/heat meter, data concentrators, collectors, terminal equipment and integrated energy management system. Over 40 million instruments have been installed in the field. We are dedicating to be a trusted metering solution provider. LONGiMeter, with more than one thousand employees, is the largest smart energy metering instrument company based in North China. The first fully automatic factory with intelligent automatic manufacturing realizes the annual production capacity over 30 million pcs.