Chengdu Rainbow Electric was founded in 1994, co-founded by eight enterprises including Chengdu Electric Heater Factory, mainly engaged in electric blankets and sanitary sanitizing products, its sales of electric mosquito coil liquid are not inferior to mainstream brands such as radar and olive chrysanthemum, and won the title of China's top 100 enterprises in light industry in 2017.
 
Rainbow, like Chinese brands such as Olive Chrysanthemum and Chaowei, uses a chlorfluthrin formula, and its 1.2% content of active ingredients is higher than that of Elemin. However, there is little difference between the actual effect of olive chrysanthemum and rainbow, and the hygienic insecticidal effect of both is A-level. The price of rainbow electric mosquito coil liquid has also maintained an average level, with three liquids and one device that can be used for 120 nights, and the price is 19.9 yuan. Rainbow and other electric mosquito repellent liquid on the e-commerce platform price management is more confusing, the same specification of packaging products have a variety of prices, buy the cheapest.
 
Electric mosquito coils are generally two-foot in-line interfaces, and because they should be kept upright when used, they cannot be used on flat socket rows, and need to occupy a whole socket panel. Rainbow also sells tow wire heaters, which are more convenient to plug in and can be used with plug-in strips.