MAYON TELEPHONE CO, (MATELCO)

Information and Communications Technology

2nd Floor, Midland Plaza, M. Adriatico St. Ermita Manila Manila Metro Manila

Tel : (02) 522-02-74

Fax : (02) 722-84-64

ATLAS CONSO. MINING & DEVELOPMENT CORP.

Mining, Quarrying, and Oil

7/F Quad Alpha Centrum, 125 Pioneer St., Mandaluyong City Mandaluyong Metro Manila

Tel : (02) 635-2387 / 635-4495

Fax : 635-4495

ATOK-BIG WEDGE CO., INC.

MINING

Alphaland Southgate Tower, 2258 Chino Roces Avenue corner EDSA, Makati City

Tel : 911-3101 loc. 7227/7279/7330

Fax : 911-0813/0391

UNITED PARAGON MINING CORP.

Mining, Quarrying, and Gold

5F Quad Alpha Centrum, 125 Pioneer Street Highway Hills CITY OF MANDALUYONG Metro Manila

Tel : 02 636 5133

Fax : 02 636 4923

WEBSERV ASIA CORP.

Information and Communications Technology

c/o Eastwood City Cyberpark, Libis, Quezon City Quezon City Metro Manila

PHILIPPINE TELEGRAPH & TELEPHONE COMPANY (PT&T)

Information and Communications Technology

SJS Building Casino St., cor. South Superhighway Palanan, Makati City Makati Metro Manila

Tel : (02) 844-76-47 / 818-05-11

Fax : (02) 810-12-11 / 844-76-47

ALTIGEN PHILIPPINES

Telecommunications

8101 Pearl Plaza, Suite 5D Lot 5 & 6 Pearl Drive Ortigas Center Pasig City Metro Manila

Tel : (632) 9100080-81

Fax : (632) 6354450

PHILIPPINE LONG DISTANCE TELEPHONE COMPANY

Information and Communications Technology

Ramon Cojuangco Bldg., Makati Ave., Makati City Makati Metro Manila

Tel : (02) 816-8024;816-8121;816-8711;816-8097

Fax : (02) 810-7138;818-6800

ERICSSON TELECOMMUNICATIONS, INC.

Information and Communications Technology

7/F Octagon Building, San Miguel Ave., Ortigas Center, Pasig City, Metro Manila Pasig Metro Manila

Tel : (02) 637-1600

Fax : (02) 637-6160

ETSI TECHNOLOGIES, INC. (FOR. ELECTRONIC TELEPHONE SYSTEM IDUSTRIES, INC.)

Information and Communications Technology

Mercedes Business Park, Mercedes Avenue, Pasig City Pasig Metro Manila

Tel : (02) 634-54-77

Fax : (02) 643-20-33