28 new chemical substances were added to China’s Inventory of Existing Chemical Substances (IECSC) on Jan 14th, 2019. The substances details can be accessed here.
They were previously notified under China’s new chemical notification system and five years have passed since they were first manufactured or imported. There is no tonnage limit after they are listed in the IECSC.
The IECSC serves as the basis to judge whether a substance is identified as new chemical subject to notification. It will be dynamically updated since more and more notified new substances will be qualified for listing into the inventory. Therefore, confirmation of whether the substance in your product falls under IECSC is essential before your entering the Chinese market.
The last update to the IECSC was made in Nov 2018, adding 45 substances (ChemLinked News).