The valve is a pipeline accessory used to open and close the pipeline, control the flow direction, adjust and control the parameters (temperature, pressure and flow) of the transmission medium. According to its functions, it can be divided into shut-off valve, check valve, regulating valve, etc. Valve Casting,Casting Valve,Valve Body Casting,Casting Valve Body Baizhu Network Technology Co., Ltd. , https://www.baizhunet.com
The valve is a control component in the fluid delivery system, which has the functions of cut-off, regulation, diversion, prevention of countercurrent, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest globe valves to various valves used in extremely complex automatic control systems.
The valve can be used to control the flow of various fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The valves are also divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard valves, etc.
LED light bar export company TOP10 from January to April 2017
The controversial rankings are coming again~ This issue of Xiaobian has compiled a list of China's LED light bar export enterprises in the first four months of 2017. The list is based on customs statistics. If you look at the officials, they have different opinions. Welcome to leave a message after the text. The light bar is another name for the light strip and is also named for its shape. Commonly used are Great Wall light strips, LED strips, LED strips, strips, FPC strips, etc. LED light strips are generally divided into flexible LED strips and LED hard strips, but generally also include old-fashioned strips that use LEDs to connect LEDs, such as flat three-wire 4.3W/m, flat four-wire 6.48W/m, flat five-wire. 8.64W/m light bar, etc. LED strips and LED strips have been widely used in furniture, automobiles, advertising, lighting, ships, bars and other industries. In the first four months of 2017, the total export volume of LED light strips in China reached US$206 million, an increase of 3.2% year-on-year. In the first four months, the United States ranked first with imports of 35.53 million US dollars, accounting for 16.98% of the market, followed by Germany, Hong Kong, Italy and the United Kingdom. The top five countries importing LED tube lamps accounted for 48.7%. In the first 4 months, there were 2,347 LED tube lamp export companies. The ranking of the top ten enterprises in export is shown in the following figure. The total export value of LED tube lamps of the top ten enterprises is 38.9 million US dollars, accounting for 18.85% of the filament lamp export market. It can be seen that the concentration of LED tube lamps is not high.