Holley Group, a leading watt-hour meter and Gas/water meter Manufacturer in China, which has 6000 employees enrolled with an annual production ability of 15 million meters, 40% of them are sold on overseas markets.The HLD03 (DD58) meter, awarded the KEMA certificate, has 8 times maximum overloading capacity in accordance with IEC251 and BS5685 with reliable performance. /e_product_sort.php?classid=33 /e_product_sort.php?classid=34