Color:

Large two cold and warm variable frequency cylinders [New Three stages]]

Large 3-horse cold and warm variable frequency cylinder [New Level 3]]

Large 2 cold and warm variable frequency cylinders [new level]]

Big 3 cold and warm variable frequency cylinder [new level]]

Large 3-horse Cold and Warm Fixed Frequency Square Cabinet [New Level 3]]

Large 5-horse Cold and Warm Fixed Frequency Square Cabinet [New Level 3]]

3 new three-stage cold and warm fixed frequency [ceiling machine]]

5 new three-stage cooling and heating fixed frequency [ceiling machine]]