High speed gear chain (Hawa chain) transmitting power for 50~6000 horsepower, more than 3000 rpm to high speed applications, compact design, it is an ideal transmission chain chain. She is a kind of high precision gear chain belt, both the smooth and compact chain drive, economic life and long. Characterized by a pin shaft hinge and rolling action between tiles to reduce friction and realize pitch elongation, the result is the effective growth of power transmission capacity and reduce the damage. The polygon effect after shot peening and prestressed chain plate processing, which has larger bearing capacity with a power capacity of three. In the times of the silent chain, with high speed range at high speed roller chain work ability decreased sharply, is the ability to continuously improve the Hawar chain. So the Hawa chain has on many occasions beyond all dispute, remarkable advantages Applicable to all applications of high speed prime mover, such as diesel and gas turbine power transmission and so on.