No, the eliminated one in the upper floor does not appear in ten years.
No, it doesn't. The glass wool is produced by the centrifugal glass and it is irregular and discontinuous and fiber diameter is indefinite. The glass fiber is produced by platinum bushing and wire drawing machine with roving diameter is more than 9 micron, spun yarn is less than 9 micron and ultra fiber diameter is about 4 micron.
