In 2018, the sales statistics of LED products in all major application areas showed that the architectural landscape was the largest application area of LED in China. Alfa Laval plate heat exchanger units accounted for 28% of the total market share; LED display and household appliances showed domestic light-emitting diodes. The second largest area of application is plate heat exchangers, which account for 27% of the total market share; 0603 white light for mobile phones, 0603 Blu-ray for computer notebooks, and 1206 red and green light sources, etc. are the third largest applications for plate heat exchanger units. It accounted for 22% of the total market share; traffic signals, car lights, special lighting and other applications occupy a certain market share.