- Asphalt Product Industries Inc.
- Bitumar Inc.
- Canadian Asphalt Industries Inc.
- Colas Canada Inc.
- Duncor Enterprises Inc.
- Englobe Corp
- Imperial Oil Limted
- Ingevity
- McAsphalt Industries Ltd.
- Nouryon (formerly Akzo Noble specialty chemicals)
- Ontario Asphalt Pavement Council
- Roto-Mill Inc.
- Thurber Engineering Ltd.
- West-Can Seal Coating Inc.
- WSP Canada Inc.