1990		"Sistemas Crisol” is founded in Tijuana, offering services and products such as custom development and commercial packaged applications. Its main focus evolves into payroll solutions
1991		Sistema TRESS DOS version is born: Human Resources + Payroll + Attendance.   First client: Matsushita-ACOM (Panasonic)
1995		Grupo Tress Internacional is formed to further develop its Human Resources and Payroll systems
1997		GTI already had clients in 20 Mexican states through its network of authorized distributors
1999		The Client/Server Windows version of Sistema TRESS is released during this period.  First client: Pulidos Industriales, S.A. de C.V.
2000		Branch office in Mexicali, B.C., opens with personnel and facilities to handle sales, service, and training
2002		Branch offices in Juarez, Chih., and Monterrey, N.L., open with personnel and facilities to handle sales, service, and training   Companies listed on the U.S. stock market are subject to the Sarbanes-Oaxley legislation and trust Sistema TRESS to comply with their operations in Mexico.
2003		Branch office in Reynosa, Tamaulipas, Mexico, opens with personnel and facilities to handle sales, service, and training
2004		Branch office in Mexico City, D.F., México, opens with personnel and facilities to handle sales, service, and training   Web technology based modules are incorporated to Sistema TRESS   The first Cercanía event is organized
2005		TRESS Value Added Payroll Outsourcing is introduced First client: British American Tobacco in Monterrey, N.L.   Incursion in the Central American market with the implementation of Sistema TRESS in Avent, a Kimberly Clark Corporation company in Honduras As an authorized platform, Sistema TRESS receives the Microsoft Certified Solution” certification
2006		Branch office Sonora, located in Hermosillo, Son., opens with personnel and facilities to handle sales, service, and training
2007		Branch office in Queretaro, Qro., opens with personnel and facilities to handle sales, service, and training   Personnel presence in Torreon, Coah., to handle sales, training, and service   Shared hosting services of Sistema TRESS are offered to clients looking to lighten their IT operations   Research and design start on the new generation of products based on .net technology
2008		Our customer service model evolves with the transformation of branch offices to business units
2010		Using the new web technology platform Tress Revolution is released, a software scheme like service on a cloud   With Tijuanense pride, Grupo Tress Internacional takes part in the event “Tijuana Innovadora 2010”