Advertising led screen is a flat panel display that uses an array of light-emitting diodes as pixels for a video display. Transparent led screens are used in a large number of small and large electronic devices as a user interface. LED Photoelectric Glass Repair Service. Accidents happen, but there is no need to lose the use of your valuable LED panels. The first LED network below will introduce you to what is a black LED display.
When the brightness of the LED is getting larger and larger, the LED tube can be used without a white color to achieve a satisfactory result. In order to meet people's requirements for image fidelity, LED display packaging manufacturers led by Cree began to develop black LEDs to improve the contrast of LED displays.
In summary, the black LED display is a display made of a plastic LED with a plastic bracket. Compared with the general LED display, the black LED display has higher contrast and the background color of the whole screen is more uniform.
In recent years, the pharmaceutical industry has also increased the proportion of water pollution while serving the public. Therefore, enterprises need to do a good job in wastewater treatment and recycling while developing the economy. In the past 40 years, especially in the past 20 years, China's water treatment coagulants have made rapid development and breakthroughs, and new coagulants represented by inorganic polymer coagulants have emerged one after another.
Jiarun Environmental Polymeric Aluminum Chloride is an inorganic polymer flocculant. Through the action of the hydroxyloxy functional group and the polyvalent anionic polymerization functional group, an inorganic polymer having a large molecular weight and a high charge is produced. The pH range is 5.0-9.0, and the optimum pH is 6.5-7.6. The appearance of Jiarun polyacrylamide is white powder, which mainly includes cationic polyacrylamide, anionic polyacrylamide and nonionic polyacrylamide. All products produced can meet national technical indicators.
Application areas of polyaluminum chloride:
1. Can be used for drinking water treatment 2. Can be applied to the treatment of river water, lake water and groundwater 3. Can be applied to the treatment of industrial water and industrial circulating water 4. Can be applied to the treatment of wastewater 5. Can be applied to coal mine flushing wastewater and porcelain Recovery of industrial wastewater.
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Tianqixun Technology , https://www.tqxdisplay.com