I guess it's EO4F: decoration works of buildings, such as stairs and floors (doors and windows E06B).
2 1/08: mechanical and electrical appliances (2114 takes precedence; General spraying equipment B05B；; Sand blasting B24C)
Above basis: International Patent Classification Table, 7th Edition, 1999.
(2006.0 1) refers to the eighth edition of the international patent classification table (2006.438+0).