On the new generation of welding lead trend

Lead (Pb), is a toxic metal, harmful. And it is very destructive to the natural environment. Due to the requirements of environmental protection, especially the introduction of ISO14000, most countries in the w

The United States converts cellulose directly into fuel

University of California, USA, has recently developed a new method to directly convert cellulose into furan-based biofuels.

The process is simple and the cellulose is directly converted into furans and then 5-chloromethylfurfural (CMF) is obtained. Reaction of CMF with ethanol gives e

Precautions in the use of electricity for CNC machine tools

The power supply is the energy support part that maintains the normal operation of the system. The direct result of its failure or failure is to cause the system to stop or destroy the entire system. In addition, part of the numerical control system's

March 11 Chongqing Steel Market Price Quotes

Product Name Specification Material Steel/Origin Price (yuan/ton) Than yesterday last week General line Φ6.5mm Q235 Wine & Steel 5160 0 40 660 High Line Φ6.5mm Q235 Kunming Steel 5250 0 100 750 High Line Φ6.5mm Q235 Jiuquan 5250 0 100 770 High Line Φ6.5mm Q335 Heavy Steel 5250

GM plans to push Opel brand to high-end market

GM said that the company plans to push its Opel brand to the high-end car market. At the same time, General Motors will use the Chevrolet brand car as an entry-level model to the European market to fill the Opel brand exit the market. Vacancies.

Gener