... 3. Non-Freezing 4. Lasting Bubble Nanjing JLHB Environmental Technology Development Co., Ltd is specialized in refrigeration equipment production in east ... factories(one is located in Yongyang Industrial Park, Lishui, Nanjing with an area of 20000 square meters, mainly manufacturing ... another is in No.36, Runqi Road, Jiangning, Nanjing with an area of 4000 square meters, mainly producing refrigeration ...