The NPC Standing Committee (NPCSC) is seeking public comments on a draft Stamp Tax Law [印花税法] through March 29, 2021. The draft is available in PDF here and an explanatory document (in Chinese) here. An English translation will be provided if and when available.
To submit comments online, please refer to this guide. Comments can also be mailed to the NPCSC Legislative Affairs Commission [全国人大常委会法制工作委员会] at the following address:
北京市西城区前门西大街1号 邮编: 100805
No. 1 West Qianmen Avenue, Xicheng District, Beijing 100805
Please clearly write “印花税法草案征求意见” on the envelope.