Letter of Introduction (LOI) to be issued by local contact in Singapore:
The local contact must be either a Singapore Citizen (SC) or a Singapore Permanent Resident (PR) who is at least 21 years old with a SingPass/CorpPass account. If you are applying for an entry visa for business visit (attending business negotiations or discussions), the local contact must be acting on behalf of the Singapore-registered business entity. LOIs issued by your Embassy can also be accepted, if you are unable to secure an LOI from a local contact to support your visa application for social and business visits.