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Custom 10-45mm Module Large Girth Gear pinion Ring For Grinding Mill 1. Type:1,1.25,1.5,2,2.5,3,4,5,6,8,10,12,16,20,25,32,40,50. 2. Standard: DIN; GB, GOST, AISI, etc. 3. Certification: ISO9001, Form ...