BaoDa electric proportional three-way control valve

BaoDa electric proportional three-way control valve main purposes: BaoDo three-way automatic control valve has been the country a number of patented technologies, mainly used in temperature control, flow control, and a variety of purposes of automatic on and off function, the applicable flu

·2014 Long Hao Brand National Distributors Congress opened

On the morning of September 1, 2014, the 11th Longyan Brand National Distributors Congress was grandly opened in Nanjing. With the theme of “Tiger Julong·Flying with Feiyue”, the summit invited hundreds of dealer representatives from all over the c

Design of laser diffraction grating tester based on SPCE061A

Introduction Laser diffraction gratings are a key part of laser read-write heads in computer disc drives and consumer electronics devices. At present, the instruments used to measure the parameters of laser diffraction gratings are still relatively rare. The laser wavelength used in the DVD rea