Pharmaceutical company gathers research, fabrication and merchandizing of drugs for human or veterinary.

Food industry is a sector including the whole system which, from living products tilled or bred, makes finished products, sale in a big scale for alimentation.

There are three important links in food industry:

Up link: fertilizers, pesticicdes, seeds,... manufacturer.

Central link: the whole farmer and cattle-breeder (producer of the raw material which will be transformed).

Down link: modified the products furnished (whitening sugar, whitening salt, pasteurization, sterilization, crushing,...).