1. Bond the edge of the waterproof membrane 10-15mm beyond the rubber coating ring. 2. Align the positioning hole on the upper part of the waterproof membrane with the convex point of the sheet metal.
1. Glue the edge of the waterproof film 10-15mm beyond the glue ring 2. Align the positioning hole on the upper part of the waterproof film with the bump of the sheet metal.