This work which is here presented is a part of the technologic innovation on project called "Enhancement of the processes of production of foods in Base Enterprise Units (UEB in Spanish) of province of Santiago de Cuba". The work was performed in Empresa Agropecuaria y Forestal "Sierra Cristal" Segundo Frente. The aim of this work is to determine the effect that influences negatively ... https://unitedssports.shop/product-category/bike-units-adventure/