I don't know if you didn't make it clear, or what happened? I have been engaged in construction for 20 years, and I have never heard of a solid wood floor with a keel. I wonder if it's a new product. Technically, this practice is not established, but there is such a practice of repairing the sound.
Buyer's work summary 1
Over the past year, under the leadership of company leaders and department heads, with the assistance of colleagues, my ide