Automatic door basic function

The door generally includes a fixed portion, that is, a door frame, and one or more openable portions, that is, a door leaf, the kinetic energy of which is mainly to allow and prohibit access. In addition to the above functions, the automatic door has the following functions: (1) The door is ...more...

History of the development of enamel

The kiln flower glaze of Jingdezhen appeared in the Song Dynasty. At that time, it was "fluorescent or entangled, and it was just as it was. The object was abnormally demon, and the kiln was smashed." To the Ming Dynasty, the "Yuzhang Memorabilia" contained: "Porcelain ...more...

Electric door product parameters

Power supply voltage: 220V Control voltage: 12V Current: 2.5A Motor power: 220W-370W Frequency 50H Insulation: Y grade Ambient temperature: -40-80 °C Relative humidity of air: 93 Movement speed: 18m/min Traction limit: 15m-30m Motor and turbine deceleration integrated magnetic switch non- ...more...

Large-scale commercial development of shale gas requires tar…

Abstract shale gas is the hottest concept in China's energy field. On December 6, the Ministry of Land and Resources announced the results of the second block bidding. In addition to one block, 20 blocks were not included in the standard. Oil and gas development company. This is the first ...more...

How to maintain aluminum alloy electric retractable door

1, the method of use is correct In use, the action should be as light as possible, do not use too much force; if the electric retractable door is open, if it is found to be obstructed, the power should be disconnected first. Open the small door of the electric door. 2, often clean Always cl ...more...

Scientists claim that future consumption of genetically modi…

Beijing January 7 news, according to foreign media reports, the Dutch University of Eindhoven, a white room, the next dinner put on the table. The beef on the table was cultivated using in vitro technology. These beef fibres delicately spliced ​​a "meat"; some "vegeta ...more...