Address, We have a rep from EIS that is trying to sell us some Double Treated Copper (aka Trick-o-Treat Copper). As with anything there are pro's and con's to materials. I am slightly familiar with some of these pro's and con's of double treated copper, based on past readings. What I do know about it: 1. It eliminates Black oxide and Chemical/Mechnical Scrubbing process 2. Resist adhesion is improved due to the copper topography 3. Handling parameters are increased prior to resist lamination (since there is no cleaning process prior) 4. There are difficulties in AOI-ing the layers 5. Prepreg adhesion is improved at the lamination stage 6. Is it true that new equipment is needed to process this material? EIS says no, but others I spoken with say yes. 7. Is oxide necessary when processing double treated polyimide layers. RBO (Atotech) is a recommended oxide for polyimide layers and improves prepreg adhesion? 8. etc., Please add any additional information you may have that can help in our evaluation. We have some double treated samples that we will be testing soon. Thank you in advance. John Gulley - PE Dallas, TX