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Hebei Pushiyongdao Trade Co., Ltd. (PSYD) is an import and export trader of food additives, the sole agency for the world's largest manufacturer of amino acid- Shijiazhuang Donghua Jinlong Chemical Co., Ltd. (DHJL). The main products of PSYD include Glycine, Hydantoin, Sodium Glycinate and other chelated products. In addition, PSYD provides Alanine, Threonine, Valine and other amino acid. PSYD also exports sweetener products such as Aspartame, Saccharin Sodium, Noetame and Stevioside to more tha