... resistant, corrosion-proof, waterproof, never-fading and durable.2 The aluminum frame we use in our products is ... as to provide the frames with sufficient support. In order to reduce costs, some other manufacturers may use 0.8mm or 1 ... Umbrella Commerical Use>They can be used in places such as house, balcony, office, hotel, restaurant, square, school, ... glass for you to choose from. dia 1.8m umbrella