As of this week, those guidelines are formalized and will take effect beginning February 15th.
(Source: cac.gov.cn/2019-01/10/c_1…)
+ "Blockchain information services" are those who provide information service to the general public via their apps/ web services that are based on blockchain technology.
+ "Blockchain information services providers" refer to those organizations or companies who provide support to blockchain tech companies or the general public. Some think that this is broad enough to cover foreign subsidiary or even foundations.
+ "Blockchain information service users" refer to an organization or an individual. The big question here: can this be construed to also include community members of a token project?