Internal and external problems

Although 4 months have passed, many people still vividly remember the 12th Beijing International Automobile Industry Exhibition. In this exhibition, Bosch , Continental , Alpine, Hoffman, Hankoo…

On January 9, the CPC Central Committee and the State Council held the 2016 National Science and Technology Award Conference in the Great Hall of the People. State Grid Corporation of the declaration of the "dynamic process of interconnected power grid security and key techn…

1. Darkrooms, devices and equipment for testing darkrooms, installations and equipment for optical performance testing shall comply with the following requirements:
1. The test darkroom should be free of light leakage, and its environmental conditions should not affect the transmission per…

Recently, the Zhejiang “Eastern Angels” Carnival 2015 hosted by Dongfeng Commercial Vehicle Co., Ltd. was held in Hangzhou and Taizhou. In the later period, this activity will also be carried out in areas such as Shaoxing and Ningbo.

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(1) Select intrinsically safe magnetostrictive liquid level timing, be sure to pay attention to whether the magnetostrictive sensor (SPM200) and the safety barrier impedance match. Since the power supply voltage of the liquid level gauge sensor is 15 to 36 VDC, which is smaller than the power s…

The reason why the diesel is solidified at a lower temperature is because diesel contains a certain amount of wax. When the temperature is lowered, these waxes gradually precipitate and form wax crystals. As the temperature decreases further, the wax crystal grows rapidly. First, a cross…