HK is dead.
It is at least 10 years ago when leaders of HK made decision to change a structure of business in HK. They are not interested in small low risk business from around a world. If you are wealthy individual ro company, you are gladly welcomed, still.
Singapore is not very good option. Every company need a resident director. Hire one and pay a very high fees or to obtain a residence permit, there. If you obtain a residence permit there, you will need to renew it. They will check if you staid in a country for at least 270 days per year.. Many companies advertise a cheap local director service. But they do not tell all the truth. Once you have their local director, they will ask for a lot of paperwork showing a details for each transaction. And they will bell you a hefty fees for examining every one yout transaction. No singapore local director will sign a
power of attorney. They want to bill you for every signature on every paper, for every transfer etc..
South-east Asia is dead for foreign businesses. There can be some way how to have a well working business structure in
Malaysia. But is is not as easy. Times are changing. And we can forget to south-east asia for at least next decade.
There are other stars in a world for having a companies there. The most of OSPs, which are just a resellers of old solutions will not tell you about. The time of fast and cheap offshore solutions is over. More and more desparate small enterpreneurs are looking for escape from a tax net, which is tighter and tighter every year. Only big fishes can sneak.
Everyone looking for cheap offshore solution will fail sooner or later. There is abolutely not reason to optimize profits which are lower than USD 350,000. Costs for tax optimization are too high, now. And will be higher and higher every one year.