Chitosan Pesticide -prawn and crab extractIngredient: Chitosan oligosaccharides: 30g/L min N: 50g/L min Nematodes Killer Agent: 300ppm Efficacy: 1. New tag killing nematodes agent, prevent the nematodes activities,prevent the nematodes' effect on roots, decrease the Nematodes density in soil. 2. Take roots rapidly, accelerate root growth, and solve effectively the question of weak growth and malnutrition. Produce the resistance factor for bacteria, virus, and fungus. 3. Improve the absorption for all kinds of nutrients, increase the output by 20%--50%, and promote the fruit grade and inner qualityPackaging：250g*20 bottle/case500g*20 bottle/case200kg/barrel/p>