Umbrella Skeleton Uses Structural Mechanics, Using A Solid Structure Of Umbrella Bone Composed Of 8 Structural Steel And Carbon Fiber Composite Structure, Flexible And Strong, Stable And Wind Resistant. High Elastic Spring Is Added At The Folding Position Of The Umbrella Bone, Which Effectively Improves The Opening And Closing Efficiency Of The Umbrella Surface. When The Umbrella Is Opened And Used, The Rainwater Will Naturally Fall Off. After Being Used Up, The Water Drops Will Immediately Leave The Umbrella Surface. It Is Strong Against Water And Has A Dry Effect. It Prolongs The Life Of The Umbrella. Nano Technology Is Used On The Ordinary Umbrella Surface To Prevent The Lotus Leaves. Water-resistant Effect, Forming Water-resistant Fabric, Effectively Blocking Rainwater Infiltration.