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CSA B44-07

Safety Code for Elevators and Escalators (Bi-National standard, with ASME A17.1-2007)
standard by CSA Group, 04/06/2007

CSA B64.10-17/B64.10.1-17

Selection and Installation of Backflow Preventers/Maintenance and Field Testing of Backflow Preventers, Includes Update No. 1 (2019)
standard by CSA Group, 03/01/2017