This is from Xiamen Winsum (WSG) Machinery Co., Ltd. 

We are the most professional factory of construction machinery spare parts in Chinese market more than 8 year, 

Our manufacture covering: Track Roller , Carrier Roller , Sprocket , Idler , Track Chain , Track Shoe , Swing Bearing , Bucket , Bucket Teeth , Adptor , Pin , Bush , Bolt & Nut , End Bit , Cutting Edge, Final Drive, Swing Drive etc.

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