The Fine Bubble Disc Diffuser features a disc-shaped design and uses an EPDM/silicone membrane with a surface densely covered with micron-sized pores, generating ultrafine bubbles of 0.1-1.5mm. A single disc provides an airflow of 1-8 m³/h, with an oxygen utilization rate of 35%-50%. It is suitable for water depths of 2-8m, resistant to acid and alkali corrosion, and can withstand intermittent aeration. DUBHE's coarse bubble disc diffuser produces uniform microbubbles for superior oxygen transfer, lowers energy use, reduces maintenance, and offers durable, corrosion-resistant performance for efficient long-term aeration.It is widely used in municipal wastewater treatment plant biochemical tanks, industrial organic wastewater treatment systems, and is also suitable for high-density aquaculture ponds, constructed wetlands, and river ecological restoration, making it a core component of high-efficiency and energy-saving aeration projects.