Direct disc diffusers ye linear design features ye nyuɔɔth, a lëu bï ya luɔ̈ɔ̈i në ɣän kɔ̈k yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic yiic Aluminium alloy surface is anodized, and can also be electrostatic spraying according to user requirements. Aluminium alloy surface is anodized, and can also be electrostatic spraying according to user requirements. Aluminium alloy surface is anodized, and can also be electrostatic spraying according to user requirements.