Silver-black reflective film can not only repel aphids and prevent poisoning, but also reduce temperature and weed in summer and autumn. It is silver gray on one side and black on the other. Silver grey face upward and black face to the ground. Silver black film reflects better, and soil cooling effect is more obvious. Silver gray surface has the function of repelling aphids and preventing poisons. Black surface can prevent the transmission of sunlight, cool down and weed. Because it can reflect more ultraviolet light, silver black two mask has the effect of inhibiting vegetable growth.