... : Certificate:GS(TUV) wooden playground equipment:1)Component:slide,deck,stairs,bridge,etc.2)Material(plastic):we use the best ... ,no pollution to the environment. Technology:rotational mould 3)Material(metal):use high-quality steel, phosphatized,rust cleaned,powder ... body,no pollution to the environment.Technology:rotational mould 3)Material(metal):use high-quality steel , phosphatized,rust cleaned, ...