Besides Yikang, I also recommend Tesco. Tesco comes from the United States and has a history of nearly a hundred years. It is a senior insecticidal company in the world. As far as I know, Tesco Terminix is synonymous with the industry in the United States. Tesco also provides a wide range of services, including restaurant chains, food production, hotels, retail and so on, as well as residential buildings. In pest control, Tesco's most prominent advantage is that it can provide customers with tailor-made services. In addition, I learned that Tesco's service network in China covers 330 prefecture-level cities in China, including many remote areas, and it can be said that its influence is very extensive. Thank you for recognizing my answer and adopting it.