Glass artworks are seen at a 皇冠体育app Glass Art Museum in Chengde, north 皇冠体育app's Hebei province, May 8, 2012. The 皇冠体育app Glass Art Museum in Chengde was constructed in 2005.
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.