“和丰”生物有机肥是中美合资吉林敦化市和丰生物有机肥料有限责任公司生产的新型高科技生物工程产品，是生产无污染、无公害纯天然绿色食品的优质肥料，具有优质、高产、高效、长效、价廉、无毒、无残留、使用安全方便等特点，一次施用可满足作物全年生育需要，不需追肥。该 “Hefeng” bio-organic fertilizer is Sino-US joint venture Dunhua Hefeng Bio-organic Fertilizer Co., Ltd. production of new high-tech bio-engineering products, is the production of pollution-free, pollution-free natural green food of high quality fertilizer, with high quality, high yield , Efficient, long-lasting, cheap, non-toxic, non-residue, safe and convenient to use and so on, one application can meet the needs of crops throughout the year, without top dressing. This