Nantong Changtong Measuring & Testing Equipment Co., Ltd is located in the east of Yangzi River and Nangtong called NO.1 city in modem times ,separating with shanghai because of the river. It deals with business on deve loping,production and services of all kinds of dynamometers and testing boardshelfs. From many years ago,my com pany collected some senior and intermeiate technical personnel intelletectual the enterprising spirit is that regarding science and technology as the guide, pioneering and inventing, refinement being practical, customer bei ng the highest,put out market demand and have perspective things constantly,and optain multiple patent rights. 　The company produces the testboard shelf of many kinds of serial engines systematically,with the dynamometer (water vortex,electric vortex,electricity,water conservancy,hydraulic pressure)absorb the unit for the power,the collecting machine,liquid and electricity to integrate.Supported by technology of the computer, use the modern measuring and control technology,make up perfect testing and control the automatic testboard, already there are several dozen the variety,test of adaptable different type engines is required.