Linyi Ocean Import&Export Co.,LTD,a coolroom sandwich panel&Aluminium windows and doors manufacturer.Our group factory is located in Shandong.Shandong Province is light-steel structure production base, have a large number of counterparts, all kinds of raw materials and auxiliary materials suppliers, is a complete and mature industry.All of our products are produce by our professional workman and we have our high-work-effect trade team, you can totally believe our service. And we have 10 year experience of design, manufacture and sell , we cherish every order from our honor.