r with glass, use very convenient adjustment .
2. Roller thick rubber hierarchy, and long service life.
3. Beautiful outlook, cover an area of an area small.
4. Cots leak-proof performance is very good on both sides: one side is filled with special glass, the other side is filled with hardened manganese steel, two materials are super hard wear-resistant. That does not prevent the grain directly by Roller Sheller leave out. Even if the material is worn, can still flanging, turn around, etc. leak.