Ionics Inc.
14 Mountain Drive
Light Industry and Science Park of the Philippines II
Brgy. La Mesa, Calamba City
Laguna, Philippines 4027
Trunklines: (6349) 508-1111

Ionics EMS, Inc. - Plant 2
14 Mountain Drive
Light Industry and Science Park of the Philippines II
Brgy. La Mesa, Calamba City
Laguna, Philippines 4027
Trunklines: (6349) 508-1111

Ionics EMS, Inc. - Plant 5 & 6
Circuit Street
Light Industry and Science Park of the Philippines I
Bo. Diezmo, Cabuyao City
Laguna, Philippines 4025
Trunklines: (6349) 543-0772

Ionics Properties, Inc.
14 Mountain Drive
Light Industry and Science Park of the Philippines II
Brgy. La Mesa, Calamba City
Laguna, Philippines 4027
Trunklines: (6349) 508-1111

iOmni Precision, Inc.
14 Mountain Drive
Light Industry and Science Park of the Philippines II
Brgy. La Mesa, Calamba City
Laguna, Philippines 4027
Trunklines: (6349) 5450050