This is Nancy from Cixi Joint Roller Co.,Ltd.Nice to contatct with you.Our company was founded in 2004 and is specialized in production high quantity rollers and fittings,sliding systerm and so on.If you want to see more item,pls visit our website:www.joint-roller.com.Should any of these items be of interest to you,pls let us know.We will be happy to give you a quotation upon receipt of your detailed requirements.