January 10, 2005

48 Rotchild St. P.O.B 277 Rishon Le Zion 75200, ISRAEL
Suite 350
11820 Parklawn Drive
Potomac, MD 20852

Sirs,

This is to report to you the progress we have made with our wave soldering as a direct result of implementing your recommendations at our facility.

1. After seeing significant improvements in wave solder quality on a test project using the Wave Optimizer, our Process Engineering Manager Mike Marshall, in conjunction with our Manufacturing Manager, made the Optimizer's methods a part of our daily process control procedures, for each of our specific board types to be employed on all shifts.

2. By focusing on board quality rather than limiting ourselves to wave machine performance verification, we found a strong correlation between the number of defects on the leads of SOT transistors and the dwell time parameter. Specifically, we found these leads require a full 1.0 seconds in the chip wave in order to be defect free, without insufficients. For one board type, this brought the board from an average of 17 wave solder defects overall to an average of one.

3. For lead free wave soldering, we found that in order to prevent defects almost all boards required longer dwell times than the boards we ran through the regular solder, although how much longer is particular to each board type.

4. Using the Optimizer's techniques every day on one particular board type, we saved 257 hours of touch and rework per month and brought matters to the point where there was no more need for touchup and rework on that board type.

5. We have calculated that this saved our facility over $50,000 over 12 months on this one board type alone. When focusing on additional board types, similar benefits were enjoyed as a result.

6. The optimizer more than paid for itself really quickly.

7. We used the "Secret Technique of Marking Your Fingers", testing a different set of fingers on each wave machine every day, thereby eliminating finger variations as a variable in board quality.

8. I prepared a technical report on these results and techniques and presented it at six sigma black belt conference last year in Toronto.

Thank you for your excellent support, recommended methods and superior product.

John Lanferman
Process Characterization Group Leader
Celestica
1615 East Washington Street
Mount Pleasant, IA 52641