Xingjia Bioengineering possesses the exclusive production technology in China to manufacture Danduoli using hydroxyl-methoinine-manganese as the main raw material. It is aimed at helping chicken layers meet their nutritional requirements and help them boost their egg laying capability as well as the quality of eggs produced. Experimental trials have shown that Danduoli can act as supplement for methionine, organic trace minerials as well as vitamins. Danduoli serves as an effective but low cost feed additive, and economic returns from using it will be high.