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      FK makes following National Standards and Industry Standards:

      National Standards:
      1. GB/T27554-2011 Rolling bearings- Insert bearing units- Identification code
      2. GB/T27555-2011 Rolling bearings- Insert bearing units- Specifications
      3. GB/T27560-2011 Rolling bearings-Cast housings for insert bearings-Specifications

      Industry Standards
      1. JB/T 8513-2010 Rolling bearings-Insert bearing units-Classification
      2. JB/T 8876-2010 Rolling bearings-Cast housings for insert bearings-Specifications
      3. JB/T 8919-2010 Rolling bearings-Insert bearings and eccentric locking collars-Specifications
      4. JB/T6363-2007 Rolling bearings-Pressed housings for insert bearings-Specifications
      5. JB/T6640-2007 Rolling bearings- Insert bearing units- Identification code
      6. JB/T5304-2007 Rolling bearings-Insert bearings-Radial internal clearance

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