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Who We Are

Our Locations

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PQ is a company with deeply ingrained core values.

Our five values are part of every decision we make, and are on display for our colleagues, stakeholders and communities.


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Global Headquarters

Lindenberg Corporate Center

300 Lindenwood Drive

Malvern, PA 19355-1740

Mailing Address


P.O. Box 840

Valley Forge, PA 19482-0840

Tel: (610) 651-4200

Fax: (610) 651-4504

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