From an ordinary employee to a successful entrepreneur, Chang Kuo-hsi has spent more than 20 years in Kunshan, east China's Jiangsu Province. His team has installed custom industrial dust-collection systems in more than 70 factories in the Suzhou area, cutting emissions and protecting the region's blue skies. His journey also reflects the opportunities created by China's growth. From Taipei to Kunshan, Chang now calls both places home.