The UL information for Mechatronics fans can be found in their catalog. For both AC fans and DC fans the UL file is E137077.
The engineering information including the safety approvals for Mechatronics fans is found on page 26 for DC fans and page 42 for AC fans in the catalog.
The UL file number can be searched on www.ul.com for reports. An account is required to view the information.