i dunno about the processed meats in singapore.
but i worked at a processed meats plant during the summer.

i've never seen more hearts and brains and fats on invoices
before.
Well the offals are the tasty parts anyway
And they will definately need fats for that nice mouth feel and
flavour
A lot of people in Singapore use fats for things like siew mai,
charsiew bao etc etc
The containers of fat coming in is amazing. Haha