According to the Company Registry, there exists a company named " 毛飯煮意有限公司 Momoriceism Limited". And according to a very suspicious website (https://coltd.hk/company-72566028-details.htm), it's address is Room 02 & 26, 13/F, Wing Shing Industrial Building, Ng Fong Street, which correlates with the location of this note. Also, https://www.facebook.com/CforConscienceHK/posts/106398731734174/ seems to be talking about this. I think all that's left is to verify whether this POI still exists at this location, and decide what exactly this POI is.