bungee trampoline 1.Passed CE,ISO,TUV 2.size:diameter360/340/440cm 3.funny and healthy for children bungee trampolinematerial1.The materials mainly imported steel and PE net national standard materials such as galvanized pipe, iron, sand the surface using automatic welding equipment treated with interfaces solid, smooth, no glitches, etc;2.iron imported from Germany, environmental non-toxic ...