The reason for the blackening of copper wire is caused by many factors, not only the formulation problem, but also the state of the copper wire itself, the rubber processing technology, the rubber vulcanization process, the cable structure, the sheath rubber formula, the production environmen.......

: Volatile organic compounds are widely used in daily life, such as petrol station gas station, decoration paint time, etc. They are one of the culprits of haze and photochemical smog and other serious atmospheric pollution. But volatile organic compounds are also important chemi.......

Since 2009, China's automobile production and sales have been ranked first in the world for eight consecutive years. As of the end of 2016, China's car ownership has reached 194 million. With the rapid growth of China's automobile production and sales, more and more car c.......

Recently, many users have raised many questions about the install.......

First, the urgency of installing an emergency help alarm system

With the development of education in our country, the scale of school construction in various regions is continuously increasing, with heavy construction tasks, complex student resources, increased fl.......

With the continuous deepening of the development of modern high-quality agriculture, the industry has paid more and more attention to the foundation of agricultural production-soil. In the process of soil testing in the laboratory, sometimes soil samples need to be pre-treated, u.......

Explosion-proof air conditioners are a type of explosion-proof electrical appliances, mainly used for cooling and heating in flammable and explosive environments such as petroleum, chemical industry, oil depot, and offshore oil platforms. Explosion-proof air conditioners are classified into h.......

In 2015, due to the domestic economic development entering the new normal state, China's domestic emission standards for diesel vehicles have been fully implemented. Environmental protection standards have entered the most severe period of implementation, coupled .......