1. The Trane (China) Co.,Ltd.（TOP 500）
2. Emerson (Suzhou)Electric Co.,Ltd.（TOP 500）
3. Daikin air-conditioning technology (Nanjing) Co.,Ltd.（Japan-funded）
4. Kunshan Tecka Industries Co.,Ltd（Taiwan-funded）
5. JiangSu Shuangliang Eco-Energy Systems Co.,Ltd.（Public Company）
6. Nanjing Wuzhou Refrigeration Group Co., Ltd.（Restructuring of state-owned equipment manufacturing enterprises）
7. Nanjing TICA air condition equipment Co.,Ltd.（Private equipment manufacturing enterprises）
8. Nanjing General Hospital of Military Region (visiting air-conditioning system in function)
9. Nanjing Metro Operation Co., Ltd. Branch (visiting air-conditioning system in function)