Dongsun Ind.Co.,Ltd. is a pioneer of the chemical synthesis field of "animal health product" Since 1982, especially "Ethoxyquin" with our own technology. We continuously had performed research and development about animal and aqua feed additives. Our product is not only prevailing on our domestic market but also exporting to many countries and sales amount will be USD3,000,000 in the year of 2002. Furthermore, through approving "ISO 9001 certificate" we are especially proud of our excellent R&D team and quality control system.