The shanghai Yo-pi Port Machinery CO.,ltd,is a company specializing R&D and manufacturing port equipment such as Crane,Grabs,Spreader and other pare parts..The company has got well known reputation.products are designed by leading edge tech-knowledge with human factor concept,calibrated by experienced technical and engineers.we are working together with other manufacturers and engineers,to ensure innovative and competitive designs.Product development is guaranteed,because of this co-operation and therefore solving specific problems for our clients is the cornerstone of our business philosophy.so the reliability of the products can be guaranteed,and different customer requests can be satisfied.our product with BV certificate,LR certificate and CCS certificate for shipping industrial.