wah lao....Tai Seng Industry is near the old Paya Lebar Airport
road, near DHL building...u can see along Paya Lebar Road...
say from Geylang/Katong, along Paya Lebar Road, towards Serangoon
(my place), AMK,...u see Paya Lebar Post, then Geylang NPC, then
A-Z building, then the old HESHE factory near the existing
Crocodile building and Traffic Police (inside the lane)..
carry on move towards North, then u reach the junction (turn right
is Paya Lebar Old Airport Road), there on your 1 o'clock (in
direction), u see industrial building..and possibly a DHL
building..
that's Tai Seng Industrial Park..
hope it helps..