Energy harvesting technology breakthrough step by step lit 35 LED lights

The University of Wisconsin-Madison official website recently released news that Wang Xudong, associate professor of materials at the university, led his team to develop a cheap and simple way to convert footsteps on the floor into usable electric energy, Into a more "green" prod

Fertilizer companies no longer have the enthusiasm for pale storage

In early January 2005, the National Development and Reform Commission and the Ministry of Finance formulated and announced the "Administrative Measures for Commercial Reserves in the off-season fertilizer season." When the "Measures" was introduced, fertilizer companies set

Van dumper

Van van body tipper
With a closed-structure carriage and hydraulic lifting mechanism, after the carriage is tilted at a certain angle, the cargo is transported by its own dedicated dump truck that is unloaded by its own weight.

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In 2008, the initial value of US steel imports fell 5% year-on-year

Based on the latest data from the US Department of Commerce's Steel Import Monitoring and Analysis (SIMA), the American Iron and Steel Institute (AISI) reported that US applications for import permits in December 2008 were 2,090,000 net tons, a decrease from the 2,726 million net tons reco

Regulating valve three generations of product division

From the beginning of the century to the seventies and eighties after the time, the control valve is still at the level of the first generation of products. Its features are: â‘  six or seventy-year-level single-seat valve, double seat valve, sleeve valve as the leading product; â‘¡ Thi

Steam solenoid valve related knowledge

Medium Description Daily life we ​​come into contact with the steam is divided into two kinds, 1, steam boiler - saturated steam 2, thermal power plant out of steam - superheated steam 1, saturated steam temperature and pressure is relatively stable, the temperature is below 250