... rail must provide wheels with continuous and smooth and the least resistance of the rolling surface. Payment ItemsL/C at sight or ... network world wide.Our company has a large rang of various assortment of steel products such as: I-Beam, Channel, Angle, ... -term partnership! Company NameTianjin Shangyi Metal Structure Trade Co. LtdAddressA1905 of Future Plaza, No 103, Weidi Road, Hexi District, Tianjin, ...