World natural gives affirmation to deal with evaluation bodies (FEB) considering requirements on the planet natural Approval Rules for Field Appraisal of Unlisted Electrical Equipment , ISO/IEC 17020 and NFPA Rules. World natural guarantee FEBs can evaluate unlisted electrical stuff in the field. The world natural Approval helps the Authority Having Region (AHJ) to evaluate and uphold unlisted electrical equipment in the field.