美国采购需求：活性药物成分、化妆品原料、补充剂、植物提取物、食品添加剂

I'm working with a client interested in incorporating Fermented Green Tea at a high concentration of L-Theanine into their beverage line. Could you please provide the product specifications, including any relevant quality certifications and testing results? Additionally, I'd like to know if you have any distributors based in the US that stock your product. This info would really help us streamline our sourcing process and ensure a smooth collaboration. Thanks!