Yes, uEASE can be used for data writing at mass production. In addition to uEASE, flash writer is also available. Flash writer can write in standalone environment not requiring PC connection. ●Flash writer by third-party ・ Kyoeisha Flash writer (Model name: I.S.P-310) URL http://www.k-kyoei.jp ・ Flash Support Group Company (Model name: AF9201) URL http://www.j-fsg.co.jp