Headquarter :   Address : 400 Chalermprakiat Rama IX Road, Nong Bon, Prawet, Bangkok 10250 Tel : 02-726-2555, 02-726-2828, 02-727-4000 Fax : 02-726-2630-4 Map   Customer Relations : E-mail : crc@metrosystems.co.th Tel : 02-727-4242   Investor Relations : E-mail : ir@metrosystems.co.th Tel : 02-727-4115, 02-727-4124   Human Resources : E-mail : recruitment@metrosystems.co.th Tel : 02-727-4338-41 , 02-727-4296–7       Enterprise Systems Group (ESG) E-mail : esgmkt@metrosystems.co.th Tel : 02-727-4394, 02-727-4994   Solutions Integration Group (SIG) E-mail : sigmarketing@metrosystems.co.th Tel : 02-727-4715 Business Continuity Services E-mail : BCS@metrosystems.co.th Tel : 02-727-4039 SIG Call Center E-mail : SIGCallCenter@metrosystems.co.th Tel : 02-646-6500   Office Supplies Group (OSG) E-mail : osgdc@metrosystems.co.th Tel : 02-727-4545 www.metro-oa.com E-mail : msc_supplies@metrosystems.co.th     Branch Offices :   Address : 16th Floor SM Tower, 979/30 Phaholyothin Road, Samsen-nai, Phayathai, Bangkok 10400 Tel : 02-727-4015, 02-727-4420 Fax : 02-298-0038 Map     Address : 888/15-17 Ploenchit Road, Lumpini, Patumwan, Bangkok 10330 Tel : 02-727-4135 , 02-727-4938 , 02-727-4432 Fax : 02-253-0563 Map