1. maintenance service of feiyue home appliance maintenance department in luogang district, Guangzhou, Guangdong province: No.2, Donghong 3rd Lane, Nankang New Village, East District, Luogang District, Guangzhou; 2. maintenance service of Guangzhou Shangling Air Conditioning Equipment Co., Ltd.: No.12, Xinmin 6th Street, Gexin Road, Haizhu District, Guangzhou, Guangdong Province; 3. maintenance service of Guangzhou Guangren Electric Service Co., Ltd.: No.16, Huafeng New Street, Datang Village, Haizhu District, Guangzhou, China.