Our company Zibo Zhenlan Machine & Trade Co.,Ltd is a professional fasteners and precision parts manufacturer,with over many years;manufacturing experience,especially the rich experience in the processing of washers,bolts nuts,and various stamping parts.Furthermore,in the domain of the precision CNC parts processing,we represent the first-class level in China. In special alloy field,we are professional ,our products including high temperature,corrosion risistance nickel based alloy(Monel ...