PIONEER CERAMICS, INC.

811 S. Laurel Street, 1552 Mandaluyong City Mandaluyong Metro Manila

Tel : 724-7406 / 724-7487 / 724-0078

Fax : 723-8416

MARIWASA SIAM HOLDINGS, INC.

CONSTRUCTION, INFRASTRUCTURE & ALLIED SERVICES

Barrio San Antonio, Sto. Tomas, Batangas

Tel : 628-1986 to 89; 628-3871 to 80

Fax : 628-1985/3991