In 1997 the State sold 53 % of BB’s shares to the private company Metalexport Sp. z o.o., which in 2004 was renamed Mex-Holding Sp. z o.o.
En 1997, l'État a cédé 53 % des actions de Bison-Bial à la société privée Metalexport sp. z o.o., devenue Mex-Holding sp. z o.o. en 2004.