HangZhou Lvrou Biotech CO., LTD., Briefly speaking, "PE input and activation technology", through spraying protein genes on crop's leaves, sends directives to relevant receptor proteins of the crops to activate their immunity, therefore achieving disease prevention and pest resistance, triggering metabolic system of plants, and enhancing their growth. Rather than a pesticide or fertilizer, it serves the same function as do they, but is free from their destructive effect on the ecological environment. It can prevent crops from illnesses like what vaccines do, and also raise crops' ability to absorb fertilizers and photosynthesis, thus realizing higher output and harvest.