10 Most Active Volcanoes In The World: Mount Ulawun. 7. Taal Volcano, Philippines â The second most active volcano in the Philippines with 33 historical eruptions. All of these eruptions are concentrated on Volcano Island, an island near the middle of Taal Lake. Taal Volcano and Lake presents one of the most picturesque and attractive views in the Philippines.
PVC can be plasticised to make it flexible for use in flooring and medical products. Rigid PVC, also known as PVC-U (the U stands for unplasticised) is used extensively in building applications such as window frames and cladding.
The OPC can be used for following applications: 1  General Civil Engineering construction work. 2  RCC works(preferably where grade of concrete is up to M-30) 3  Pre-cast items such as blocks, tiles, pipes etc. 4  Asbestos products such as sheets and pipes. 5  Non-structural works such as plastering, flooring etc.