ULC 331
Guide for the Investigation of Strainers for Flammable Fluids and Anhydrous Ammonia (ULC C331)
standard by Underwriters Laboratories of Canada, 01/01/1975
NACE ASAE-ASABE B11 CGA ICC CTA
Hand Tools for Live Working up to 1000 V a.c. and 1500 V d.c.
standard by Underwriters Laboratories of Canada, 06/04/2014