Ningbo Sitongda Mould Manufacturing Co., Ltd. as a private joint-stock enterprises was founded in 1988 (Former as Zhoushan Sitongda Mould Manufacturing Co.,Website:http://www.stdmould.com, Ltd.) is specialized in design, manufacturing and sales of precision stamping dies of metal cylinder head gasket, sealing gaskets (and high-speed perforating machine, roller machine and coating machine) etc.