Contact Usadmin2021-01-05T16:55:15+07:00 Message Us First Name *Email Address *Phone NumberMessage0 / 180Send Message Our Office Address: Suite 1602, 16th Floor, Ruby Tower, No 81-85 Ham Nghi Street, District 1, HCM City, Vietnam Phone: +84 28 3803 5888 Email: contact@ofs.com.vn Business Hours Monday - Friday 8am to 5pm Sunday - Closed