Marbel Telephone System, Inc. (MTSI) is a company that provides SOCSKSARGEN with Telecommunications and Broadband Solutions for its populace. It was established in Koronadal City, South Cotabato Philippines as a sole proprietorship business owned and operated by Mr. Antonio C. Yap in 1965.
The Company has been proactively involved with the progress and development in the province of South Cotabato since February 1995 when it extended its operations covering the other eleven municipalities. This has not only accelerated the delivery of basic data and telecommunication needs within the province, it also gave further advancements in socio-economic activities.
In recognition for its efforts, the company has been awarded as “The Most Outstanding Countryside Investor of the Year” in Medium Scaled industry Category during the 25th Philippine Business Conference, October 22,1999.