1, Outdoor playground 2,Suit for school, park, community 3, ... into equilibrium, high strength, sound thickness with the standard of GB/T 4454-1996.4 Guardrail and handrail With Ø 60mm, ... All the screws are No. 304 stainless steel material (GB/T1221-1992).The introduction of the three leading craft equipments ... product quality is stable and reliable, production is rapid. Outdoor playground equipment