Initially established in 1994, Tangshan Huizhong Instrumentation Co., Ltd.(Huizhong) is currently the largest ultrasonic flowmeter, water meter and heat meter production base in China, and the largest among its domestic counterparts in terms of the scale and size of the standard flowmeter calibration system. The company�s major product � series ultrasonic flowmeter has maintained the first place over the past decade among its domestic counterparts in terms of production capacity and sales volume, and its exported flowmeters have acquired the CE ***** 10, 000 battery-powered ultrasonic flowmeters, the first of its kind developed in China, has found successful applications in 100-odd water supply enterprises across ***** 2002, the ultrasonic heat meter for household use was successfully developed by Huizhong (The development of the meter was a project assigned by the State Science and Technology Commission and was financially supported with the innovation fund specifically for technology-based medium-and small-sized enterprises). As the first of its kind developed in China, the series heat meters have been extensively used in households and district heating pipeline network. Thanks to its leading technology and superior product quality, Huizhong�s product are well acclaimed by both domestic and overseas users, and the series ultrasonic flowmeters and water meters have been sold in batch quantities to various counties and regions including Europe, Africa, north America, and south Asia.