We are the manufacturer of engine valves.We have all kinds of the valves.If you need something you can give us an offer.If you want to know more details.You can net on:http://www.changhongqimen.com/en/cultureNewsInfo1.asp?Id=115 And we can product the valves as your samples.We are looking forward to your reply. You can contact us: The manager:zhiying,chenTel:86-311-83548684Fax:86-311-83546111http://www.changhongqimen.com