& nbsp; & nbsp; & nbsp; & nbsp; & nbsp; Shiyan Yamao Auto Parts Co., Ltd. long-term supply students - Auto Electric Appliance Co., Ltd. is the production of "health card" electromagnetic valve: DF254 (24 V) in Hubei Province. Also known as: electronically controlled dual tone air horn solenoid valve, also known as: double horn solenoid valve. It is universal in Dongfeng EQ145, EQ153 and Dongfeng truck series truck. It is divided into two kinds of black and white (see picture 1, 2), the function of the two, the same as the use of the same. Just plug in different ways (see photo 3). Product quality assurance, after-sales service three. Please customers in accordance with the need to call letter advice and purchase!