We use these three kinds of glue. As for that understanding of the glue, you are able to refer to the following articles: What’s MR glue-which is commonly used for plywood / film faced plywood / blockboardWhat is WBP glue – which is usually utilized for WBP plywood / film https://kylersrqmi.blazingblog.com/29583661/the-5-second-trick-for-birch-plywood-sheets-for-sale