Situated at the southwestern end of China's coastal area, Guangxi Beibu Gulf Economic Zone mainly consists of four cities, that is, Nanning, Beihai, Qinzhou and Fandgchenggang, with a population of over 12 million.
Geng Jiasheng, 54, a national master technician in the manufacturing industry, is busy working on improvements for a new removable environmental protection toilet, a project he has been devoted to since last year.