In this industry, few things have seemed as unchanging as the market for gel; the trio of Rosco, Lee, and GAM Products has dominated the action for a very long time. That changed last fall when Fort Wayne, IN-based Apollo Design Technology introduced a new line of gel just before LDI 2000. Apollo always sold metal patterns and glass filters, so gel is well within the parameters of the existing product line. Still, Joel Nichols, president of Apollo, admits, "If, a year and a half ago, you ...

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