Machines, plants and equipment used for processing raw hides to finished product. The main steps are: 1) Beamhouse, preliminary operation of cleaning and preparing skin, by soaking and pre-tanning; 2) Tanning through the phases up to dermis fiber stabilization; 3) Retanning, Dyeing and Fat-Liquoring , to confer physical characteristics of softness and elasticity 4) Finishing, surface treatments according its intended purpose or the specific requirements of fashion applications.