1. Yu Xin, Liu Bing, Gu Li, Wei Bo, Zhang Shenghua, Zhang Huining, Zhang Shuting. Chinese invention patent for a device that inhibits the growth of microorganisms in nutrient solutions in water treatment tests. 2. Gu Li, Liu Bing, Shen Biao, Yu Xin, Wu Zhilin, Fuliang, Wei Bo. Chinese utility model patent for device used to collect water samples in biological filter for water treatment.