电 话：xxxx-00000000
传 真：xxxx-000000
邮 箱：xxxxx.cn
地 址：xxxxxxxxxx
Material: galvanized steel plate
Specification size: with the size of the air duct
It is used to control the wind speed and adjust the air volume. It is convenient to operate, smart in structure, and can be installed directly on the air duct.
Fortune 500 Government platform Bulk package TOP developer Public facilities Universities and hospitals
