White birch log requirements are as follows: sawing Grade:A/B/C Length: 3.3m,4m,4.9m,5m ,5.3m Diameter:18cm+up 10cm -15cm free trim Quantities: at least 5000 CBM/month Spruce and Pine Logs Grade : sawing grade A/b/c Logs: Pine, Spruce Length: 4m,6m Diameter: 14+ Quantities: up to 8000 m3/month.