A self-sealing energy efficient refueling system

A new type of fuel pipe with high corrosion resistance and low emission

A self-venting flange with anti-error flange device

A New Type of Air Purification Device for Pressurized Exhaust End of a Vehicle

A Catalytic Converter with Telescopic Joints

A New Double Layer Exhaust System Device

A new type of engine cooling water pipe

A multi-hole jet muffler

A self-mixing Francis blade inlet flange

Multi-chamber exhaust muffler for agricultural machinery

Scalable muffler for cars