Promotora Ambiental, S.A.B. de C.V. (BMV:PASA B) acquired 50% stake in DESCONT, S.A. E.S.P. on January 26, 2017. Promotora Ambiental, S.A.B. de C.V. (BMV:PASA B) completed the acquisition of 50% stake in DESCONT, S.A. E.S.P. on January 26, 2017.