1.  Bowed Glass is commonly used in China Cabinets.  If the radius of the bow is a circle,  it can
     usually be replace easily by several glass companies that stock or even bend their own glass.
2.  A Serpentine bend or an irregular curve is a custom order and is more expensive to replace, and
     therefore, more valuable.
3.  Beveled Plate Glass that is also Bent in a Curve is the most valuable.
4.  Chinas display your collections and depending on what you are displaying, the choice between
     mirror backs and wood backs or wooden shelves and glass shelves should enhance your 
     collection.  Traditionally,  ceramics and porcelains display the best on wooden backgrounds, 
     clear or colored glass display well on mirrored and glass backgrounds.
5.  Mirrors can add a lot of light and a feeling of extra room in a small space.  Some chinas have 
     backs that can be easily altered to either wood or glass.  If it is a framed panel it is much more 
     difficult to do this.
6.  Some Chinas have the option of adjustable shelves, a great option if you have extra tall pieces
     that don't fit in the top shelves which are usually the tallest in a china.