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standard or nonstandard: standard; Model number: module 1,1.5,2,2.5,3,4,5,6,7,8 etc.; Material: Steel; Brand Name: HRSY; Standard or Nonstandard: Standard; Shape: Other; Product Name: Helical gear best supplier; Processing: Hobbing; Tooth Profile: Helical Gear; Pressure Angle: 20; Port:...