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Customs clearance knowledge training is open on Yuanfar companyOn the afternoon of June 9th, the risk Control Department of Yuanfar Company invited Yang Ling, general manager of Shaanxi Yinghe Group Company.

Dragon Boat Festival is coming！ The Dragon Boat Festival is popular in China and the Chinese culture circle of the countries of the traditional cultural festival, legend of the Warring States period chu poet Qu Yuan jumped into the Miluo River on the fifth day of the fifth month.

Production methods of hydrazine hydrate: There are many production methods. 1. Urea oxidation method mix 10% sodium hypochlorite solution and 30% liquid caustic soda, then cool, adjust the mixing, then cool, adjust the weight ratio of chlorine and alkali in the mixture to 1:1.8, and put it into the

Hydrazine monohydrate is a colorless fuming liquid, weakly alkaline, slightly odorous, and combustible. Melting point -51.7°C, boiling point 120.1°C, 47°C (3.33 kPa), relative density 1.032 (21/4°C), refractive index 1.4280. The flash point (open cup) is 73°C. When it comes into contact with metal o

Energy is the most essential cause that drives all things. Whether it is the driving of the ground car or the flying of the rocket/aircraft, it is simply a process of obtaining kinetic energy in the form of some energy conversion! The engine of a car simply uses the energy generated by rotation to d