Instead of the conventional unit operations, many B2C chemical products are manufactured using unconventional processing techniques such as etching, physical vapor deposition, and calendering. Consider the low-E double-pane insulating glass unit (IGU):

(a) Describe the structure and materials used for such an IGU.

(b) Name a company supplying each type of material used for the same.

(c) Describe the manufacturing process for the same.

(d) Name some manufacturers of these IGUs.