Contact Us
Here at Essential Integrated Systems, providing excellent customer service and support are our number one priorities.
If for any reason something goes wrong, we have dedicated and professional support personnel standing by ready to handle any issue as quickly and efficiently as we possible.
To contact one of our customer service representatives, please select the relevant department by choosing from one of the options provided for you in the drop down menu below.
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Hong Kong (Corporate Headquarters)
Unit 1404/ 14/F, Kam Chung Bldg, 52-58 Jaffe Road, Wan Chai, Hong Kong
Office: +852 (0) 3693 1443
Fax: +852 (0) 3693 1443
Business Hours: Monday – Friday: 8 AM – 6 PM: HKT (HONG KONG)
Bangkok
Levels 8 & 9, 1 Silom Road, Zuellig House, Bangkok, 10500, Thailand
Tel: +66 (0)2 231 8335
Fax: +66 (0)2 231 8121
Business Hours: Monday – Friday: 8 AM – 6 PM: UTC (Bangkok)
Singapore
9 Raffles Place Level 58 Republic Plaza Singapore 048619
Tel: +65 (0) 3106 2443
Fax: +65 (0) 3106 2443
Business Hours: Monday – Friday: 8 AM – 6 PM: SGT (SINGAPORE)
Hong Kong
(Cassius Group Limited, Strategic business partner)
Unit 1404/ 14/F, Kam Chung Bldg, 52-58 Jaffe Road, Wan Chai, Hong Kong
Tel: +852 (0) 3101 9800
Fax: +852 (0) 3101 9876
www.cassiusgroup.com
Business Hours: Monday – Friday: 8 AM – 6 PM: HKT (HONG KONG)
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