Contact Center

UL DQS Inc.

1130 W. Lake Cook Rd.
Suite 340
Buffalo Grove, IL 60089
Phone : 1-800-285-4476
Fax : 1-847-279-3380
E-Mail : customerservice@us.dqs-ul.com


Office Hours:

Monday through Friday
7:00 am to 6:00 pm Central Standard Time (CST)