In May 2002, the ark agricultural formerly shijiazhuang desai chemical agricultural development center was established, began to poly （aspartic acid applied in agriculture. According to the market demand and development and has developed more than 50 kinds of foliar fertilization fungicide products, in hebei, shandong listed on the market step by step. 　　Sales reached 10 million yuan by the end of 2003. Primitive accumulation in agriculture industry. 　　On April 16, 2004, hebei ark of agricultural science and technology co., LTD. Was set up. 　　On July 1, 2004, hebei ark of research and development of agricultural science and technology co., LTD. Poly （aspartic acid “, the state administration of quality supervision and quarantine by the Chinese academy[查看详细]