Except for the Beixin Group, which has the right to use the trademark "Ou Song", other companies do not have the right to use it, unless Beixin authorizes others to use it, or other people use or sell Beixin's Ou Song. Pine board, otherwise it is infringement.

The raw materials of European pine board are mainly soft needles, small diameter wood of broad-leaved trees, fast-growing thinning wood, etc., such as eucalyptus, fir, poplar thinning wood, etc., which come from a wide range of sources, and can be made into large panels. Differences in the product series of the Nordic and New European pine boards: European series, South American series, North American series, environmental protection grade E1, formaldehyde release is about 3.0mg/100g, E0 level, formaldehyde release is 0.3mg/.