screw drum type

cutting drum of coal drum shearer

Rotary cutting drum

cutting vibration

Ultrasonic Vibration Cutting

vibration cutting

Transferring drum and rubbing drum

Turning drum and twisting drum mechanism

Trial cutting method for cutting machining

3D screw method

90° side screw driver

a screw rod for transporting bottle

abnormal screw

Absorbabal screw

absorbable inner fixation screw

Absorbable interference screw

absorbable interference screw fixation

absorbable screw

Absorbable screw fixation