Textiles were Taiwan ’ s biggest industry and dyes were mostly imported, so D.C. thought that prospects were good and consented. The two brothers and other investors established Everlight Chemical Industrial Corporation, which agreed to a technology transfer arrangement with Eko.
陳定川衡量紡織已是當時台灣第一大產業，染料卻多仰賴進口，於是慨然允諾，兄弟倆和幾位股東著手和日本永光洽商技術合作，成立了台灣永光化學公司。