On September 30, 1831 Bonaplata formed the firm Bonaplata, Rull, Vilaregut i Cia with his three brothers, his friend Joan Vilaregut, and his new partner Joan Rull.
Më 30 shtator 1831 Bonaplata formoi firmen Bonaplata, Rull, Vilaregut i Cia me tre vëllezërit, shokun e tij Joan Vilaregutin dhe partnerin e ri Joan Rullin.