Lanju originated in Zhongshan, founded in 1982, is the earliest manufacturer of electric mosquito coils in China, almost participated in the formulation (revision) of all national standards and industry standards in China's household insecticide industry, and has been awarded the "Top Ten Enterprises in the National Light Industry Industry" for seven consecutive years, and the current market share is comparable to radar.
 
The main use of domestic 1% chlorfluthrin formula, divided into unscented, wild chrysanthemum and fragrance type, the price is 24.9 yuan, two bottles of liquid medicine is enough to use a summer. On e-commerce platforms, Lanju advertises its electric mosquito repellent liquid as having a rapid mosquito repellent effect that can interfere with mosquitoes recognizing human odor, but this claim is not accurate. The active ingredients of electric mosquito coils such as chrysanthemum are pyrethroids, which are used to kill mosquitoes rather than interfere with mosquitoes, and mosquito repellent water containing DEET has the effect of repelling mosquitoes.
 
Another main children's product series of Lanju, Erbaojian, uses 0.52% tetrafluoromemethrin formula with citronella extract, which is slightly more expensive than the commonly used model, but is equipped with a heater with timing and switching functions, which is more convenient to use. There is no requirement for children's products in China's health and insecticide product registration, and the classification of children's products is more of a commercial activity, and the commonly used electric mosquito coil liquid will not cause "additional harm" to children. The safety of pyrethroids has been verified in detail, and mammals have corresponding metabolic pathways for the breakdown of such drugs (except for cats), and although they are strongly toxic to most invertebrates, they will not cause harm to humans when used correctly.