1. materials: poplar, birch, beech, etc.
2. length: less than 1600mm
3. width: 39-80mm or as customers' needed
4. thickness: 8-12mm or as customers' needed
5. glue: E0 E1 E2
6. face/back: a: natural sanded
b: decorated paper with two sides or one side
c: glued with two sides or one side
7. radian: as customers' needed
8. tolerance:length:+/-1mm
width and thickness: +/-0.3-0.5mm