... .0% to 100.5%Specific rotation (a) 20/D (C=10 in 2N HCL)+31.5 to +32.5 ... , is a high-tech enterprise, specializing in R & D, production, sales and technical services of L-Theanine, L ... with good reputation. Adhering to the top R & D capacity and the excellent quality, we are the largest ... in production workshops in line with cGMP standards, class D clean room for drying and packaging, separate quality ...