Hangzhou Jia Yi Steel Structure Co., Ltd., established in 2003, is the most professional and reliable outdoor billboard manufacturer in China.13 years' experience,10,000 sqm workshop , 4 automatic production lines , annual output over 1,000 billboards , ISO certificated, two hours reach Ningbo or Shanghai Port,this is how we keep good quality and competitive prices for our valued customers .Till now our billboards have been exported to over 38 countries in Asia, Middle-east, Africa , Europe and American market.