The light of the sun makes the ground full of life. Sunlight is the most important natural light source. It shines on the earth and makes the whole world colorful and colorful. The light we use in our daily lives, it is an artificial light source, much weaker than sunlight, and it also contains a d ......
With the reform and opening up of China's economic construction, the deepening reform of protective clothing is also imperative. How to make the reform of protective clothing meet the requirements of safe production and meet the requirements of workers' safety and health. This ar ......
Sinopec Economic and Technical Research Institute predicts that in 2014, the growth rate of China's oil market will increase slightly, and refined oil resources will remain oversupplied; ethylene demand will continue to grow, and some of the composite and organic products will continue t ......
Many citizens have recently discovered that the night in Zhongshan has changed. It is no longer a faint yellow, but a clearer white. This is the LED energy-saving street lamp renovation project in the central city. It was learned from the Municipal Transportation Group that the first phase has been ......
1 Introduction With the increasing use of power electronic converters, electric energy has been more fully utilized. However, the wide application of nonlinear power device equipment produces a large number of distorted current harmonics. The flow of distorted current in the power grid leads to ha ......
With the slow progress in the spring of 2014, the lighting industry's major brand manufacturers in the first quarter of the channel development work has come to an end. Throughout the year of 2014, major brands have held national distributor conferences, or held local core distributor conferenc ......
At the "China LED Lighting Standards Internationalization Forum" held recently, Chen Yansheng, chairman of the China Lighting Association, warned that there is no shortage of standards in China's LED lighting industry. However, if new standards come to the fore, it will easily cause se ......
Soil moisture is an extremely active factor in the soil, which affects and restricts all fertility factors and production performance in the soil. In agricultural production and scientific research, we can generally use soil moisture tester to determine the soil moisture content. In this ......
Great Wall Motor has cooperated with top suppliers such as Bosch, BorgWarner and Delphi in order to enhance its vehicle manufacturing technology. Recently, the reporter learned from the Great Wall Motor official that the well-known Swedish auto parts supplier “Autolif†will build an in ......
Guzhen, as the core city of China's lighting industry, according to incomplete statistics, currently has tens of thousands of lighting companies, tens of billions of annual sales, more than 100,000 employees, professional lighting market, radiation nationwide, total sales It accounts for more th ......