dairy milk

We have been watching …the sangam dairy house hold milk supply 1/2ltr sachutes does not contain the following information:
1.batch no if
2.date of manufacture/use before/expiry
3.MRP
there by people complaining ….how to asses the purity,of quantity supplied in the residences …..despite the agents,booths questioned.
RBmadduri,
Freelance journalist
Amaravathi
Hyderabad
Wailtair…circuits
India.