zhongji has developed the innovative pu sandwich panel production line which all of customers are satisfied. the optimum process design covers the whole range of pu system. it has been used over 20 years in the field of pu machines and plant engineering on all kinds of high pressure pu metering machines without any trouble and problems. we provide three kinds of pu sandwich panel production line as l-type, straight type, and heads for continuous panel. all of pu sandwich panel production line are available as multi components as 2 to 6 components.