In a 10-ton capacity pilot plant solar liquid desiccant air conditioner (LDAC) developed. dehumidification of the outside air is achieved through a honeycomb packed-bed heat and mass exchanger. using lithium chloride solution as the desiccant. The dry air obtained from the dehumidification process is evaporative cooled inside a cooling pad and directed into the conditioned space. https://www.parisnaturalfoodes.shop/product-category/vitamin-b-12-5000mcg/