Contact Details

Corporate Headquarters
Malvern, PA
300 Lindenwood Drive
Valleybrooke Corporate Center
Malvern, PA 19355-1740

Mailing Address:
PQ Corporation
P.O. Box 840
Valley Forge, PA 19482-0840

Tel: (610) 651-4200
Fax: (610) 651-4504
E-mail: Customer Service
E-mail: Technical Service

National Silicates
an affiliate of the PQ Corporation
Toronto, Ontario
429 Kipling Avenue
Etobicoke, ON  M8Z 5C7

Tel: (416) 255-7771
Fax: (416) 201-4343
E-Mail: Customer Service
E-Mail: Technical Service
Health, Safety &
Environment
    |    North America    |    EMEA    |    Mexico    |    South America    |    Asia Pacific