High-voltage vacuum circuit breakers to have a good arc-extinguishing characteristics, suitable for frequent operation, do not overhaul the advantages of long cycle times, in today's power industry in rural and urban power grids, chemical, metallurgy, railway electrification …

In recent days, a large area of ​​the country has cooled down. While we are adding clothes, we should also test and maintain the car for our own car. As the saying goes, three separate, seven points raised, if the car is not well maintained, performance will be greatly affec…

On January 11, 2014, it was jointly organized by the "Commercial Vehicle Industry" magazine, the Institute of Highway Research of the Ministry of Transport, the China Automotive Technology Center, Beijing Institute of Technology, Tongji University, Chang'an University, Beiji…

[Introduction] According to LED related data, in 2013, LED driver IC manufacturers accumulated, resulting in the LED display industry in the finishing stage, coupled with the impact of LED bidding, revenue and profit performance is relatively weak. According to LED related data, in 2013, L…

Those who have studied in recent years should all know the physical examination car . The hospital sent a physical examination car to the school to give each student a health check. There …

In April, the pressure on the steel industry remained heavy. The seasonal demand improved but the margin was limited. The spot steel price fluctuated within a narrow range. Some st…

Since the round bottle labeling machine entered the historical stage, it has played an important role in the face of fierce competition in the market, aroused the impetus for the development of enterprises, in the future development trend to make decisions on the response. The variety of commod…

VRF refrigeration is a variable refrigerant flow system. The system structure is similar to a split type air conditioner, and an outdoor unit is used to correspond to a group of indoor units. In the control technology, the variable frequency control method is adopted, and the number of the indo…

1. Ball valve has a significant switch position indication: body, ball and handle an assembly unit, the handle is directed to the pipeline direction valve is open, the handle vertical pipeline direction valve is closed; even the worm head also with on / off instructions. 2 locking device design…

In recent years, we have witn…

In recent years, the production and quality of our sealed products have gradually entered a new stage and new period. The application in the pharmaceutical machinery and equipment is also growing day by day, and the same requirements are constantly increasing, which makes the sealed product ind…