Side column umbrella known as side push umbrella or unilateral umbrella, mainly for anti-direct sunlight large umbrellas. Due mainly to the beginning of the design nobility shade garden use, all also known as patio umbrella. But with the development of the continuous promotion of the simple lifestyle and commercial leisure industry, the patio umbrella has been widely used in our life, beautiful shape, effective sunscreen shade, cheap outdoor commercial advertising is more conducive to his continue to promote