Check valve (check valve) Opening and closing pieces of the medium flow and power to open or close their own to prevent the media back to the valve called the check valve. Check valves are automatic valves, mainly used for medium flow of one-way pipe, only allow medium to flow in one direction to pr ....
The safe interval between pesticides refers to the period from the last application to the harvest of the crop, that is, the time from the spraying to the residual amount to allow the residual amount. Due to the different speeds of decomposition and disappearance of various ch ....
Summer is the season most used pesticides, fungicides and pesticides is an important pesticide Army family, are a class of agents used to control plant diseases, where there are pathogenic effect kill or inhibit the growth, but do not interfere with normal plant The growing ag ....
Decoration order [index] (1) Subject Restructuring (2) Hydropower renovation (3) package pipe (4) Tiles (5) Woodworking (Sakaguchi, etc.) (6) Brush oil (7) Wall paint or wallpaper (8) Install socket panel (9) Kitchen ceiling (10) Cabinets (11) Install the finished product door (12) In ....
——Yu Hua, general manager of Fenike Superhard Materials Co., Ltd. entered 2012. For the superhard materials industry, the most important thing should be the new material following the “Decision of the State Council on Accelerating the Cultivation and Development of Strategic ....
ã€China Aluminum Network】 The Vickers hardness tester for aluminum profile inspection is a small portable instrument that is suitable for measuring aluminum profile hardness quickly and easily. It can measure the shape of other devices that cannot be measured or inconvenient, such as ex ....
In recent years, China's mold industry is growing at a rate of 20% per year. It is expected that China's mold industry will slow down in production and sales this year, and the growth rate will fall by more than 10%. Luo Baihui, secretary-general of the International Model Association, sa ....