SJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY About springSJRChina kids amusement equipment factory-LONGLY PLAY The diameter of the spring is 2.6cm,very strong,can support not only the weight of children but also adults.SJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY Good packingSJRChina kids amusement equipment factory-LONGLY PLAY Standard export packing to protect the goods from damage like scratch.Packing materials:Cotton and pp film.SJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY Our factorySJRChina kids amusement equipment factory-LONGLY PLAY SJRChina kids amusement equipment factory-LONGLY PLAY