Why do you ask so much about my business activity?

Because ACRA registers every company under one or two activity codes (SSIC), and the code affects referrals to other agencies, licences and what banks expect to see. A vague description can slow approval or the bank review. A few specific lines, such as “online sale of skincare to Southeast Asia”, are enough.

Source: Registering a local company via Bizfile, Accounting and Corporate Regulatory Authority (ACRA)