EVEN (Qingdao Guoxiang Yiwen Rubber Technology Co., Ltd.) supplies high-performance tube type (straight cylindrical) air spring bellows for passenger vehicle air suspension systems. The straight-tube profile provides a large effective area and uniform load distribution, delivering high load capacity, stable ride height and excellent durability for demanding suspension applications.

• Tube profile design - straight cylindrical contour with uniform diameter along the axis, providing large effective area, high load-bearing capacity and stable performance under varying load conditions.
• Specialty rubber compound - manufactured with specialty rubber and the world-first "Liquid Gold" (EVEC) liquid-phase mixing material, delivering 4.3 times the extension fatigue performance and 5.8 times the flexural crack resistance of competitor formulations.
• Ultra-strong bonding technology - advanced rubber-to-cord adhesion improves bonding performance by 30%-50% compared with conventional products.
• Advanced manufacturing - produced on a fully automatic winding production line with precise calendering, processing and adhesion control, ensuring consistent quality.
• Full lifecycle traceability - every bellow is traceable from raw material to finished product through the Eco-Rubber Cloud system with MES, WMS and ERP integration.
• Rigorous testing - each product passes 80°C and -40°C vertical durability tests and 1/4 suspension durability tests, with fatigue life exceeding twice the national standard under compact-size and heavy-load conditions.

• Passenger car air suspension systems (OEM and aftermarket).
• New energy vehicles (NEV) and luxury vehicle platforms.
• Custom development and collaborative design available per customer requirements.

• No.1 market share in passenger car air spring bellows in China.
• Over 9 million units delivered to high-end OEM customers since establishment, including over 6 million units supplied to innovative pioneers and market-leading brands in China's new energy vehicle sector.
• The first Chinese brand to break the international monopoly in passenger car air spring bellows.
• Backed by the National Rubber & Tire Engineering Technology Research Center (Guoxiang Industry Chain), with 3,500+ patents and IATF 16949 certification.
• Experienced engineering team providing customized formulation development, structural design and manufacturing services.

For OEM projects, aftermarket supply or custom air spring bellow development, please contact EVEN - your premier global specialist of engineered rubber solutions.