Secondary double glazing is actually a term that usually refers to the process of introducing a 2nd window to an existing window. We use numerous methods for making laminated glass. CIP, SGP, PVB & EVA are completely unique processes which make extremely identical outcomes. CIP nevertheless, due to injection approach, https://edwinukwdx.blogofchange.com/26814052/energy-efficient-glazing-in-sw6-fundamentals-explained