The authority called a halt to IECSC Supplementation in Nov 2011. Before then companies could apply for IECSC inclusion without supplying any test data if there was proof that the substance had been circulated in China before Oct 15th, 2003. However, there are numerous substances which fulfilled IECSC supplementation criteria but missed the supplementation window. Since 2011, the industry has been eagerly anticipating the reopening of the IECSC supplementation. Thus, China’s Ministry of Ecology and Environment (MEE) reopened the supplementation of China’s Inventory of Existing Chemical Substances (IECSC) on Jun 21st, 2019.