... in Yongyang Industrial Park, Lishui, Nanjing with an area of 20000 square meters, mainly manufacturing heat ... No.36, Runqi Road, Jiangning, Nanjing with an area of 4000 square meters, mainly producing refrigeration units ... Station (a national-level experimental center) with Hefei General Machinery Research Institute. Leak Seek ... *280ML Comstar tracer liquid of system with leak-off orange boiling point