(1).Size: 1.7x0.8x2.3m
(2).Material: Steel Pipe, cleaned by sand-blasting, then coated with phosphat

(1).Size: 1.7x0.8x2.3m(2).Material: Steel Pipe, cleaned by sand-blasting, then coated with phosphate solution,
and finished with electro-static powder coating; other material is available(5).Designed under the scientific principle of human mechanics and kinematics(6).Usage: special for kindergarten, residential park, and school