美国采购需求：L-茶氨酸、L-焦谷氨酸、L-脯氨酰胺、L-叔亮氨酸、D-谷氨酰胺、D-苯丙氨酸

We are interested in your L-Cysteine product and would like to request some additional information. Specifically, we would appreciate it if you could provide the Safety Data Sheet (SDS) and Technical Data Sheet (TDS) for this product. Additionally, please let us know if your facility is equipped to analyze metal trace contaminants in the L-Cysteine. Understanding the quality and safety standards of your product is vital for our purchasing decision. If you could also share any certifications or test results related to the product's purity and composition, it would be greatly beneficial. Thank you for your prompt response.