Better check out boskey. I suspect it's the most popular steel touring frame available in mainland China. No doubts most of those frames are manufactured in some OEM factory as they have never shown how they are made.

Sure they are some awesome welders because they are capable of making customized bike frame with S&S coupling and belt drivetrain compatibility.

They also make decent steel racks that resembles the tubus ones - at around $20. Lots of quality parts can be obtained from their taobao site.