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