Ricardo Guillermo Amtmann Aguilar

Maxcom Telecomunicaciones SA de CV operates as an integrated telecommunication service operating company. The firm provides widespread voice and data services to residential and small and medium sized business customers in metropolitan markets in Mexico. It also offers local and long-distance voice, data, dedicated, and dial-up Internet access, public telephony, voice over Internet Protocol telephony, and paid television. The company was founded on February 28, 1996 and is headquartered in Mexico City, Mexico.

IXE Grupo Financiero SA de CV is engaged in providing financial services. Its services include institutional and retail banking, securities brokerage, mutual funds management, credit, financial and operating leasing, mortgage finance, administrative services and loan portfolio management and workouts. The company was founded on June 12, 1990 and is headquartered in Mexico City, Mexico.

Part of Grupo Financiero Banorte SAB de CV, Arrendadora Chapultepec SA de CV is a provider of automobile renting services. The private company is based in Mexico City, Mexico.

Casa de Bolsa Bancomer-SA provides investment and financial services. The private company is based in Mexico City, Mexico.

Invekra SA de CV engages in financial investment and shareholding activities. It develops and manufactures pharmaceutical products through its subsidiaries. The company was founded in 1980 and is headquartered in Mexico City, Mexico.

Berol SA is a Mexican company that specializes in the manufacturing and selling of writing instruments, including pens, pencils, markers, highlighters, and related children's products. The private company is based in Mexico City, Mexico.

Laboratorios Sanfer SA de CV manufactures and supplies pharmaceutical products. Its brands include Alquimid, Andantol, Astelin, Clavulin, Coversyl and Daflon. The company was founded by Santovena and Fernandez in 1941 and is headquartered in Mexico City, Mexico.

Almacenadora del Valle de México SA de CV is a private company based in Tlalnepantla, Mexico. The Mexican company provides storage services.