So much has changed in the banking and offshore formation industry in the past 2 years. 2 years in this industry is like 20 years in other business areas. In 2017 you︀ could open an account in any Cyprus bank for BVI company within a week ...︁ today, they do not accept BVI companies at all.
On the other hand, as far︂ as I know, OCBC requires minimum deposit of 30 000 per currency (EUR, USD, CHF︃ etc.). Again, this is what they told me last year, God knows how much are︄ they asking today.