Hi, Did anyone provide literature or website that studied shelf life(or storage) for different surface finishes(HASL, ENIG, OSP, Immersion Ag, Immersion Sn, etc) Thsnks! Best regards Leo ___________________________________________________ 最新版 Yahoo!奇摩即時通訊 7.0,免費網路電話任你打! --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- http://messenger.yahoo.com.tw/