Is a professional manufacturer of industrial automation instruments, Inc. (formerly Hangzhou Automation Instrument Factory). Throttling device produced by the standard measurement of the calendar year by the Zhejiang Provincial Testing Center calibration. Additional flow coefficient uncertainty is very small, and the linearity, repeatability, interchangeability. Widely used in petroleum, chemical, metallurgy, electric power, food, textile, light industry, enjoy a certain reputation in the country. Standard cutting pieces of the company (including the standard orifice plate, nozzle, Venturi) in strict accordance with "GB2624-93", "ISO5167-1991" and other standard design and production. At the same time according to user's different requirements for special cutting device design and product.. (more>>)