株式会社テイジイエル

Founded in July of 1984, Technical Group Laboratory Inc. (henceforth TGL) is a software development company that serves as the parent company of TGL Planning Inc.

In August of 1999 there was a company restructuring and TGL established the multimedia brand NSP, and also transferred Giga to the new company. In November 2003, NSP changed its name to TGL Planning Inc., and later to Entergram Inc.