MAIN CHARACTER 1. Used for small diameter logs ripsawing, one feed comes out multiple sheet following the preset size. 2. Compare with wood band saw, operate more simple with high efficient and accuracy. 3. Saw blades cooling device, less burning blades, increase the service life. 4. Double row toothed chain feed logs, easy maintain and save cost. 5. Output end with material guide device, less clip saw blades, log feed more smooth. 6. Forward and Backward guideway of spindle box adopts manual lubrication pump supply oil.