Unfortunately I don't have a lot of more relevant information, these are things I got on the wild some time ago, and can be found on the internet if you look carefully.
The only extra I could add about to Russia-Singapore relations:
1- a few years ago Singapore donated a reasonable sized land plot for Russia to construct a "Russian Cultural Center".
As far I'm aware there is nothing in there yet, except the rock with the plate;
2- there are some "reports" the Project 03160 ‘Raptor’ was designed in cooperation with a Singaporean company. No more info about it, and not sure about the veracity, but ST Eng have some sweet 70kn interceptors (Super Swift 18);
[EDIT] 3- there where some talks about Russia-Singapore cooperation in "Smart Cities" technology,. No idea if it is actually happening;
[EDIT] 4- Singapore have been investing in Russia together with the RDIF. You can find information about it in the RDIF website (just search "Singapore").
Btw, Singapore is a far more interesting country than what it looks on the surface. In case of being interested the best start point to understand Singapore is the book: "From Third World to First: The Singapore Story - 1965-2000" - Lee Kuan Yew.
Also, there are some Singapore laws Russia could have a close look, like about NGOs. Basically, anyone can freely establish a NGO in there, but it will have no fiscal benefits unless they formally convince the government the object of the NGO will benefit Singapore as a whole, and not certain specific groups.
Also, I head about some migrant issues in Russia. In SG people coming to work on "certain" jobs have to get a specific visa, and have tons of restrictions, including personal. For starters, they can just be from specific countries, like India and others they have historical relations. Maids (IDK a lot of details about others) cannot marry in Singapore unless they leave the country for two years; got pregnant, no talk -> expelled; acquire Singapore nationality? NO.
 I could find the exactly coordinates of it with some patience but I need some sleep now.
 can be easily found on the internet...
 just the founder can pull in money tax free.
 the salaries are also based on the origin, it should be more than what they earn at home but (not necessarily) on pair with the regular Singaporean ones. The employer provide the all basics, shelter and food (usually in large and properly organized sheds with several bunks etc. maids live where they work). The idea is to provide proven better conditions than what they have in home while being as cheap as possible to the Singaporean company.