Welcome to the 2018 Power 50 list, which ranks the most influential people in the industry.

#8 Greg Muzzillo & Vera Muzzillo, Proforma (asi/300094)

2017 Rank: 8

Maintaining their spot in our rankings, the Muzzillos are the market’s top power couple, leading the industry’s fourth-largest distributorship. As the company continues to develop a new tech platform, its owners serve 60,000 customers, which provided the Ohio-based firm with 2017 sales of nearly $370 million. Earlier this year, Proforma said it expects considerable growth after the platform rollout.