Address : 9/9 Assadathorn Road, Amphur Muang, Chiang Mai 50200, Thailand
Tel. : 66 53 252222
Fax : 66 53 358111
URL : www.royalcnxgroup.com
E-mail : gsa.pen@royalcnxgroup.com
66 53 252222 gsa.pen@royalcnxgroup.com 
