Makati

1008-B Pasay Road, Makati City
Telephone No.: +632 - 8441793
Telefax No.: +632 - 8442485

E-mail : keystone_makati@yahoo.com

Quezon City

78 Dona Hemady Avenue corner 11th Street, New Manila, Quezon City
Telephone No.: +632 - 7246847
Telefax No.: +632 - 7226691

E-mail : keystone_hemady@yahoo.com

Ortigas

Home Depot, Unit 22-23A Ortigas, Julia Vargas Avenue, Barangay Ugong, Pasig City
Telephone No.: +632 - 6352186
Telefax No.: +632 - 6352186

E-mail : keystone_ohd@yahoo.com

Alabang

Home Depot, 2nd flr., Unit B30-31 Lot 102 -117 Alabang Zapote Rd. corner Filinvest Avenue, Westgate Alabang, Muntinlupa City
Telephone No.: +632-7712218
Telefax No.: +632-7712218

E-mail : keystone_alabang@yahoo.com