Leather sofa: Do not use irritating detergent, solvent, soapy water, benzene agent, rosin oil, etc. during maintenance, it is necessary to prevent the pores of leather from being blocked. During daily maintenance, you can sponge with cleaning liquid (such as Bilizhu), scrub it in a circular motion, and then dry it with a wool cloth. You can do it once a month to make the surface as bright as new.