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Hongkong Royce Metal Products Co., Ltd. E-mail: [email protected]
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Cover Ductile iron manhole cover We are manufacturer for more than 10 years , we make different size and weight manhole covers, grates, step etc iron & ductile iron casting like telecom manhole cover,linear drainage,channel. standards for materials used and methods of construction for the City’s public infrastructure including streets DIP Ductile Iron Pipe DOHS Department of Health Services DSRSD Dublin San Ramon Services District F Fahrenheit.Cover Ductile iron manhole cover We are manufacturer for more than 10 years , we make different size and weight manhole covers, grates, step etc iron & ductile iron casting like telecom manhole cover,linear drainage,channel. standards for materials used and methods of construction for the City’s public infrastructure including streets DIP Ductile Iron Pipe DOHS Department of Health Services DSRSD Dublin San Ramon Services District F Fahrenheit