a. Russian oak is more premium grade, clear surface, less knots. less color variation. European Oak looks much rustic. So normally our AB grade is Russian oak and CD grade is European oak. b. Russian oak has less tannic acid inside, and European oak has more, this will only influence if your color need to do fumigation, after fumigation, the appearance will be different. normally European oak looks better. c. for unfinished floor, the grain looks slightly different. Detail please check: http://www.lordfloor.com/difference-european-russian-oak-floor/

We are using Denmark WOCA Oil for our Engineered wood flooring products, for different color and finish, we use different products of WOCA. Water based stuff: 401 UV Bottom Oil (Natural color): No. 501 UV Bottom Oil (White color): No. 601 5% white pigment UV Bottom Oil (Natural color): No. 603 2.5% white pigment UV Face Oil (Natural color): No. 506 Glossy: 12-18% UV Face Oil (Natural color): No. 507 Glossy: 8-12% UV Face Oil (Natural color): No. 508 Glossy: 5-8% UV Face Oil [...]