Casting, Forging, Machine manufacturer / supplier in China, offering 48V Electric Two-Person Electric Bicycle Scooter, Alloy Self-Lubricating Mechanical Shaft Sleeve Bushing Wear-Resistant Oil-Free with Copper Base Rolled Bearing Metal Processing, Copper-Plated Self-Lubricating Dynamic Bearing Sleeve Oil-Free Wear-Resistant Composite Bushing Metal Product and so on.