GRENA REPRESENTS A UNIQUE REALITY IN THE ITALIAN LANDSCAPE FOR THE PRODUCTION OF ORGANIC FERTILIZERS, ORGANO-MINERAL FERTILIZERS AND BIOSTIMULANTS BASED ON AMINO ACIDS, PEPTIDES AND POLYAMINES Unique for the processing system: THP® (Thermal Hydrolysis Process) Unique for the use of renewable sources: organic substance of animal origin Unique for the amount of amino acids present: biostimulants by nature Unique for polyamines contained: natural antistress Unique for the results obtained: growth, quantity, and taste These 5 items represent the solid foundations of Grena products, something to always rely on when recommeding products for different crops. In particular, always specify that the THP® processing system stands for thermal hydrolysis; therefore, it is a guarantee that no chemical element enters the production cycle, but it is pure and simple wet cooking of the organic matrix.