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The difference between double seal valve and shut-off valve

The valve can completely cut off the circulation of the medium and it is less prone to leakage. The main advantage of the two-seater valve spool is the force balance structure, allowing a large pressure difference.   The disadvantage of the two-seat sanitary valve is that the two sealing surf ......

Dalberg sales of 107,000 units in 2013 grew by 21.2%

In 2013, as the country's economic situation stabilized and slowly picked up, Deutz FAW (Dalian) Diesel Engine Co., Ltd. took advantage of favorable factors, paid close attention to implementation, and united as one, producing a total of 108,000 engines and selling 107,000 engines. (Incl ......

World-class mold industry agglomeration area comes out to Ni…

Yesterday morning, "The Ningbo Mould Industry Park project syndicated credit grant and China (Ninghai) Mould City strategic cooperation signing ceremony" was held at Pan Pacific Hotel in Ningbo. This means that the Ningbo Mould Industrial Park and the Ninghai Mould City jointly f ......

LNG Bus Becomes a "King" for Green Energy Saving a…

In recent years, energy-saving and environmental-friendly clean energy passenger cars have increasingly become the “darlings” of the local transportation industry, especially with the attention paid by the new energy industry, the active participation of bus companies, and the vigorous ......

Took the lead in the implementation of the National Five Emi…

The 2014 Beijing Auto Show with the theme of "Better Cars for the Future" will officially kick off on 4.21. It is reported that the scale of the exhibition is 230,000 square meters, and it is expected that the audience will reach 800,000 people. The cultural concept of “The car mak ......

LED lighting industry set off a war between China, Japan and…

What is LED TV? What new technology upgrades and unique features are available for LEDs compared to LCDs? Will LED become a new consumer hotspot and mainstream product in the LCD TV market? In the three camps of China, Japan and Korea, who can win the top spot in this LED new product competition? ......

Panasonic LED road lighting equipment will be available to p…

The product is equipped with a control function that reduces light leakage to the surroundings to prevent light pollution, and is also equipped with a function of automatically reducing brightness to reduce waste. The system complies with the guidelines (draft) for the adoption of LED road tunnel ......

·Automobile fuel consumption data untrustworthy testing ins…

The well-known Chinese automobile research institute is a rich and powerful master. However, the current China Automotive Research Institute is in the midst of a deficiencies in the quality of fuel consumption testing. China’s auto research “Financial University”, of course, is ......

Graphic editing process in CNC machining

Since the graphics required in the CNC wire cutting process are closed graphics, it is necessary to implement modification and re-editing of more than 7 consecutive coherent fonts in the actual operation process. The specific operation steps are as follows: first click the "Curve Edit" ......

When will domestic testing equipment stand out?

“In 2013, experimental analytical equipment imported 6.294 billion U.S. dollars, and exports 1.456 billion U.S. dollars, and the trade deficit was 4.838 billion U.S. dollars. From 2009 to 2013, the deficit was continuously increasing.” In the recent days, domestic testing instr ......