Stainless steel screws advertising in our daily lives mortal mainly used to install some outdoor billboards, and many other factors profiles, structure, size, location of billboards is an important factor in the decision to use what kind of profiles installed stainless steel screws advertising, which Why stainless steel screws profiles have what type? Here let us take a look at it. Its stainless steel screws advertising there are three main sections: First, the austenitic stainless The most b

Stainless steel screws combinations in our daily lives is mainly used in electrical, electronics, machinery and equipment, electronics, shipbuilding, chemicals, water, and so many other industries, and its aim is to make it to the fastening device between product parts and components, but when put into use, through a long period of observation we will find a combination of stainless steel screws rusting phenomenon will occur, which it why would rust? Here let us take a look at it. Many people m

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1, LED streetlights own characteristics - unidirectional light, no light diffusion, ensuring illumination power. 2, LED lights have a common secondary optical plan, the LED street light shines on the desired area lighting to further enhance the power of light to reach the energy-saving intentions. 3, LED light source power has reached 110-130lm / W, and there is still much room for development, the theoretical value of 360lm / W. The high pressure sodium light power is only being added wit