When Hubei SRIDA heavy construction machinery Co., Ltd. and China Railway Electrification Bureau Group Co., Ltd. machinery equipment purchase contract signed recently in which two JW-4 Catenary working vehicle has passed customer acceptance, and in 2019 Nian 5 Yue 28 evening smoothly Loading the factory. At the request of the customer, the two contact network work vehicles will be sent to the construction of railway lines in Handan City, Hebei Province.