| http://etasmt.com/te_news_bulletin/2019-09-11/10762.chtml
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Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/04/Vacuum-Void-Reduction-Reflow-1.pdf
. Subsequently, half of the population of test vehicles were re-processed using vacuum reflow to reduce the voiding. The vacuum assisted reflow was performed in a 15-zone convection reflow oven with 3 convection cooling zones
