| Fine-Bubble Disc | Sintered ceramic or mineral-based porous body with a rubber or silicone membrane | 100–300 mm diameter | 2–12 L/min per disc, depending on diameter and pore structure | Approximately 10–35 kPa, system dependent | US$1.50–8.00 per unit in volume orders | Aquaculture tanks, koi ponds, wastewater aeration | Bubble uniformity, air leakage, membrane adhesion, flow rate, dimensional tolerance | Individual protective bags; reinforced cartons with separators | Approximately 18–40 days to major ports, excluding customs | Request installation drawings, recommended blower range, spare membranes, and a pre-shipment inspection report |
| Coarse-Bubble Tube | Flexible EPDM, silicone, or rubber membrane over a rigid support tube | 300–1,000 mm length; 50–75 mm diameter | 20–120 L/min per tube | Approximately 8–25 kPa, depending on air depth and loading | US$3.00–18.00 per unit in volume orders | Large aquaculture tanks, reservoirs, and industrial aeration basins | Membrane elasticity, slit opening, active aeration length, end-cap sealing, pressure loss | End protection and carton dividers to prevent bending or compression | Approximately 18–40 days to major ports, excluding customs | Obtain airflow-versus-pressure curves, replacement membrane availability, and mounting hardware specifications |
| Porous Ceramic Cylinder | Porous ceramic, sintered alumina, or mineral-based ceramic | 50–300 mm length; 20–60 mm diameter | 1–15 L/min per cylinder | Approximately 15–45 kPa, depending on pore size and fouling | US$0.80–6.00 per unit in volume orders | Aquariums, laboratory tanks, small water features, and low-flow systems | Crack resistance, pore consistency, air distribution, connector strength, chemical compatibility | Foam sleeves or molded inserts; moisture-resistant outer cartons | Approximately 18–40 days to major ports, excluding customs | Ask for cleaning instructions, replacement connectors, pore-size data, and batch traceability |
| Flexible Air Stone Strip | Flexible silicone, EPDM, or thermoplastic elastomer with integrated air channels | 300–2,000 mm length; 15–30 mm width | 5–50 L/min per strip | Approximately 5–20 kPa | US$1.20–10.00 per unit in volume orders | Shallow tanks, decorative ponds, and applications requiring long coverage | Flexibility, uniform slit opening, ozone resistance where relevant, end sealing, flow balance | Coiled without sharp bends; use labels showing minimum bend radius | Approximately 18–40 days to major ports, excluding customs | Confirm cut-length tolerance, connector compatibility, storage life, and replacement policy |
| Weighted Round Air Stone | Porous ceramic or mineral body with a molded weighted base | 25–100 mm diameter | 0.5–8 L/min per unit | Approximately 10–30 kPa | US$0.20–2.00 per unit in volume orders | Retail aquarium kits, small ponds, and portable oxygenation systems | Weight stability, connector retention, bubble consistency, odor, breakage rate, and water compatibility | Small inner boxes with cushioning; moisture-resistant export cartons | Approximately 18–40 days to major ports, excluding customs | Request retail-ready packaging, barcode space, multilingual instructions, and breakage allowances |