I'm new to this form. I have started packaging (PET clamshells) business couple of months ago. I am familiar with ISO 9001 but not BRC or HACCP. So, my customer sent a questionnaire which has all the questions related to HACCP. I have read most of the very helpful posts on IFSQN and got familiar with the process, but still little bit confused about HACCP. Is it just a procedure that we can implement internally or is it a certification we require from a 3rd party registrar. Is it mandatory for packaging? Please help.