We are specific in produce the stainless steel valve and the material is SS301, SS304, SS316, SS316L. The main products of our company include various ball valve, globe valve, check valve, filters, fast joint, gate valve through inner thread connection, outer thread connection, clamping type connection, welding connection and flange connection with manual devices. Should you require any further information, please do feel free to contact me and this is our websit for your reference. http://***** Joanna Wenzhou Bobao Valve CO., LTD Email: ***** MSN: ***** Mob: 0086-15888704781 Tel: 0086-0577-85800668 Fax: 0086-0577-85800558