Cleaning Topic: Learn About (os1)

9/10/2019
Cleaning Industry Reps To Gather For Symposium

CERTIFIED SUCCESS June 2018
Cleaning Accreditation Boosts Professional Growth

June 2018
Getting Ahead Of Cleaning Business Competition

April 2011
Third-Party Green Certifications Lead To New Opportunities
An overview of LEED AP, GS-42, CIMS-GB and (OS1) certifications

CERTIFICATION July 2008
Certifications For BSCs Elevating The Industry
Third-party cleaning certifications growing in popularity among BSCs