Some photos of the testing on product conducted by the full-time accredited inspector of Sunchine…
Question: What is quality control rating?
Answer 1: There are really only two QC ratings; acceptable or not acceptable. Given that any item, which may be anything from a simple mechanical part to a complex system with both hardware and software components, may have many points for test, measurement, inspection, or evaluation, each of which may be rated pass or fail, overall acceptability in the quality environment may (or may not) stem from the rating at a single point of evaluation. Depending on economic and other factors, an unacceptable rating for an item might result in rework, trashing the item, or accepting it at a reduced level or capability as a “factory second” or such-like. （Author: Guruprasad BG, B.S From: Quora）
Answer 2: The ratings is regarding power efficiency of a device, food rating re how healthy food is ect（Author: Shane Butcher From: Quora）