隔音棉-stone wool insulation

隔音棉：装修后，大约剩的1/3（一个完整包装），$35.

Roughly left 1/3 of a full package.

(ROCKWOOL SAFE'n'SOUND is a stone wool insulation for use in interior partitions of residential wood and steel stud construction where superior fire resistance and acoustical performance are required)

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