https://www.dialerking.com/

Dialerking is the 24X7 Contact Outsourcing Call Center Company that handles Chinese Mandarin and Cantonese, English, French, Spanish,Russian, Korean, Japanese, Indonesian, Malay, Thai, Vietnamese, Portuguese and other over 20 languages.Address : 1 Research Court Suite 450-189 Rockville, MD USA.+1 (786) 414-2610.