Inquiry (采购产品): Cylinder Gas I require an accurate mix of 30% nitrogen/70% helium, with as little oxygen as possible. As well as, a two stage regulator (3000 to 5000/ 25 to 50 psig. Can you supply this need? If so, quote and delivery please. Thank your for your attention to this matter. John R Dalton Alloy Surfaces Co 1515 Garnet Mine Road Bethel Township, PA 19061 E-Mail: johnd@alloysurfaces.com Phone: 610 558 7118 FAX: 610 361 7965 **** Hidden Message ***** John Dalton 1515 Garnet Mine Road Bethel Township, PA 19061 USA Company: Alloy Surfaces Co Title: Senior Chemist Phone: (610) 558-7118 Fax: 610 361 7965 E-mail: johnr22d@cocmcast.net **** Hidden Message ***** johnr22d@cocmcast.net