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QingDao Three-Star Precision Forging Gear Co.,Ltd.. was founded in 1976, is China's earliest use of precision forging production gear professional enterprises, is the national excellent forging process model enterprises, the China Forging Association, China Gear Association sponsor, is Shandong Provincial technology development center, Qingdao high-tech enterprises, and cooperation with the China Ocean University set up a mold and special materials Institute. The main products are automotive, engineering machinery and agricultural machinery drive axle differential precision forging gear.