Glass that has been tempered or laminated classifies as safety glass under heading 7007, regardless of whether it has also been edge-worked or bent. Similarly, glass with a reflecting backing that makes it a mirror classifies under the mirrors heading. Heading 7006 captures intermediate working — shaping, decorating, drilling — that does not transform the glass into a safety product or a mirror.

Yes, in general. Once glass is incorporated into a frame or fitted with hardware that makes it a complete article (such as a framed mirror, a door panel with hinges, or a glazed window unit), it typically moves out of Chapter 70 into the heading for the finished article. Heading 7006 covers glass that has been worked but remains a glass article in its own right, not yet assembled into a larger product.