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Home —→ Koon Seng Road —→ Blk 21 Koon Seng Road, Singapore 426969.
Blk 21 Koon Seng Road is a HDB block at the Singapore region of Joo Chiat.
Its block number is Blk 21, and it's in the street of Koon Seng Road of Singapore.
Its postal code is 426969.