We are a professional factory focused on R&D of railway fastener , standard and no-standard components. Our products include 6 series 1.Domestic foreign fasteners: A: Track bolt square head screw spike, T-bolt 70 rail dog spike spiral turnout . B: Elastic bar lock washer, fishplate anchor track ...

Shanghai ADJ Thermal Engineering and Heating Component Co.,Ltd is committed to provide high efficiency, energy saving, environmental protection in the field of global industrial heating gas infrared system solutions ,and combustion heat exchanger coil, design, research development ...