https://inviair.com/
HVAC Diffusers | Vent Covers, Registers, Grilles
Invi Air, manufacturer of HVAC diffusers, frameless vent covers. Offering architectural standard or custom-made linear, square and round diffusers.
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https://www.jointair.com.cn/product/Swirl-Diffuser-Fixed-Blades-41.html
Swirl Diffuser Fixed Blades-Jointair-High quality HVAC accessories, specializing in air diffusers
Swirl Diffuser Fixed Blades-SDFC
https://www.kaskomakine.com/products/industrial-main-products/hvac/shutters-louvers-registers-grilles-diffusers
Shutters, Louvers, Registers, Grilles & Diffusers | Hvac | Kasko Makine
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