Promotional Products Professional Achieves Industry Certification DAYTON, OH., (January 29, 2020) – Gary Dials, Ecommerce Manager at Shumsky, Dayton, Ohio, earned the certification of Certified Advertising Specialist (CAS) administered by Promotional Products Association International (PPAI; ppai.org), the largest international not-for-profit association for more than 15,000 members of the $21-plus billion [...]