We are the R&D manufacturer for the airless tires and all-in-one wheels. Our products are colorful, puncture-proof, maintenance-free. They are suit for sharing bike, city bike, e-scooter, medical wheelchair and so on. Nedong insist to adopt eco-friendly material on our products. Which are qualified by RoHs and SVCH testing. By passing USA CPSIA testing. We have our patents, and also can be customization as per your requirement.