Mark Langen is the Western Region Manager at Interstar Materials Inc., a Saint-Gobain Construction Chemicals company and a sister company of Chryso. Mark has 45 years of experience in the concrete industry.
Mark Langen
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Mark Langen is the Western Region Manager at Interstar Materials Inc., a Saint-Gobain Construction Chemicals company and a sister company of Chryso. Mark has 45 years of experience in the concrete industry.