Guangzhou Topone Chemicals Co., Ltd. is based in China and lists mosquito coils on Global Trade Plaza. The company offers products such as Topone Mosquito Coil 138 mm and Topone 138 mm Black Mosquito Coil, which are described as micro-smoke coils with active ingredient Rich-d-transallethrin 0.3%. These coils are designed to repel mosquitoes and prevent malaria, with each coil effective for up to 12 hours. The product is noted as green, environmentally friendly, and safe for aged individuals and children. Buyers can send an enquiry through Global Trade Plaza.