FK meets the 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