发明授权
US09194135B2 Floorboards for floorings 有权
地板地板

Floorboards for floorings
摘要:
Floorboards for making a floating floor have a core (30) which includes at least two layers of material (L1, L2), which are arranged at different distances from the surface layer (31), and which differ in respect of material properties or material composition. Semi manufactures for making such floorboards are also disclosed.
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