Inquiry (采购产品): Information Dear representative, If Skinner Marine Unaflow engines are not still built, is the turbine superior? When were the last positive displacement engines built? I have spent six years experimenting with Wankel steam engines, and lack the kind experience of a business entity, but it shows real promise. Who now alive could help me obtain or machine poppet valves like Skinner poppet valves? Any help, information.... would be appreciated alot. Thank you. J. Brantley **** Hidden Message ***** John Brantley 945 Bethel Hill Rd Shickshinny, PA 18655 USA Company: Brantley Technologies Title: Mr. Phone: 5707795152 E-mail: johnbbrantley@aol.com **** Hidden Message ***** johnbbrantley@aol.com