Originally an agent of the Intellectual Property Office of Guangdong Province, Guangzhou Zhiyou Patent & Trademark Agency has kept its clients thanks to the consistent quality of its patent applications since 1985. Its trade mark practice was launched in 2001. Led by managing director Liu Xiaomin, who specialises in mechanics, the firm serves companies in chemistry, electronics and engineering sectors. The client database consists of industry leaders in the region such as Guangdong Power Grid, Guangzhou Aircraft Maintenance Engineering, FSL Electrical and Lighting and Guangzhou Diesel Engine Factory.