Hengshui Yaohua Instrument and instrument factory's main products are: laboratory standard verification tank, economic thermostatic tank, high accuracy, good stability; Sub-standard densitometer, sub-standard alcohol meter, first and second class standard densitometer, petroleum densitometer, seawater densitometer, coking densitometer, alcohol meter, sugar content meter and all kinds of working glass float meter, etc.; Metal fixed point container devices (gallium, indium, tin, zinc, aluminum, silver, copper) and water triple point bottles, glass floats, I and II standard thermometers, special thermometers for petroleum, coking, meteorological, brewing and working thermometers, hygrometers; In particular, the special thermometer for brewing industry solves the product pollution in the process of brewing and food production, and can effectively avoid food quality accidents; Special flotation meter for brewing industry: 1, first class, second class standard alcohol meter, precision and working alcohol meter; 2, wine production for the Rusak sugar liquid meter; 3, dedicated to fruit wine, rice wine production of 0-40%v018 composed of alcohol meter; 4, dedicated to liquor production of 30-65%vol 7 sets of alcohol meter; Precision digital thermometer has wide range, high accuracy, strong stability and easy operation. It can be widely used for temperature field inspection in laboratory, test room and production process.