[BYD has applied for a number of fuel steam emission patents]-according to Sky Eye Inspection, BYD Co., Ltd. has applied for a number of patents related to fuel steam emissions, most of which have been authorized. Among these patent applications, the "fuel steam recovery device, vehicle fuel system, vehicle" patent can improve the adsorption efficiency by keeping the fuel steam in contact with activated carbon for a long time, and absorb the oil in the fuel steam as clean as possible, thus emitting clean air to achieve environmental protection.