Air Diffusion empresas de importação para air diffusion empresas de exportação

i have a new factory for manufacturing Air outlets , i need offers for studying and taking decision. so please tell me how can we co-operate 1. Rectangular duct (half automatic machines & fully automatic machines). 2.Connector system for duct with all it's shapes. ...

We are interested in rectangular diffusion grid (debit= 3000 m3/h)