Dear Sir/Madam, Hope you are doing well. Do you know what kind of amino acids could be absorbed by plants most efficiently? What big difference between acid hydrolyzed and enzymatic hydrolyzed? Only free L-amino acids through enzymatic hydrolyzed has most biological activity and completely absorbed by plants, without risk of high content of heavy metal, chlorine and sodium at the same time. Acid hydrolyze will destroy cysteine, tryptophan, and histidine. Furthermore, It contains a little L-amino acids. Enzymatic hydrolyze is the most gentle process to get amino acids from proteins. Amino acids can be released without any change and 18 kinds of L-amino acids with high biological activity completely obtained. Our FIPRO 85 16 contains as high as 20% free L-amino acids. PCR testing proves it is fully enzymatic hydrolyzed and good for plant. If you willing to try it out, just back to us. A small FREE sample will be shipped to you against request. Kind regards, ------------------ David Ye Export Manager