Baileyuan physical active fresh-keeping bag completely abandoned the traditional fresh-keeping method of using chemical agent and preservative agent, it does not contain any chemical substance, it use the principle of physical modified atmosphere\active environmental ventilation impermeable to fully meet the breathe of fruits and vegetables, especially its unique characteristics of gas adsorption\ negative anion and far-infrared can effectively adsorb the harmful gas and adjust the concentration radio for all the kind gas, can also delay the maturation of the fruits and vegetables\eliminate the bacteria\degrade pesticide residue, prevent the nutritious components is reduced as the moisture is lost quickly, extend the refreshing time of the products, make the vitamin consumption reduce 50%, which fundamentally realizes the ideal fresh effect that the palate, color and luster, nutrition not changed.