District Mechanical and Electrical Company, No. 31 Youai South Road, Nanning City, Guangxi. Nanning Zhaocai "Electric Wheelchair" Trolley and Bicycle Co., Ltd. was established in 2008. It is a newly established company. The company's service purpose is: to serve the elderly, disabled people, the elderly, the sick and other vulnerable groups in the whole society. Services, providing convenient products for their lives and actions, so that their lives and actions can be completely improved. The new high-tech products operated by the company, the "electric wheelchair" trolley with a stair-climbing device and an electric bicycle with a stair-climbing device, passed the review of the State Intellectual Property Office on April 9 this year and obtained a patent certificate.