ZHM is a combination door. The main features of the combination door, combined window are multi-fan combination, one-time installation. And the main difference between ordinary doors and windows is a combination of complete sets of installation, ordinary doors and windows is the first fixed box after the fan.
Door: 1, the entrance of the building, but also refers to the installation of the entrance to the switch device. 2, shape or role like a door thing. The way of knowing 4. Old refers to the feudal family or family of a, now also refers to the general family. 5. The classification of things. 6. Quantifiers. 7. Last name.
