DATA SDY - DATA SGP - DATA HK - DATA SDY - DATA SGP - DATA HK - DATA MACAU - DATA CAMBODIA - DATA TAIWAN - DATA CHINA - SYAIR SDY - SYAIR SGP - SYAIR HK - SYAIR MACAU - SYAIR MACAU - SYAIR SDY - SYAIR HK - SYAIR HK - SYAIR HK - Soils formulated within the sedimentary rocks are variable, but quite a few include hardpans (compacted layers) that rest