Ponggol Seafood has been around since 1969. It was originally located at punggol jetty back than in 1969 before leaving in the early 90s.It has since shifted back to its original location(actually 50m away) in 2014.
Thr Sambal kangkong was rather expensive, at $10. This was ok, I did prefer my kangkong with more pork lard and Hae Bi.