There is no clear rule which is better.

There is no clear regulation on which is better, cooking oil standard code Q or GB. The difference between Q and GB in cooking oil is that q refers to enterprise standard and GB refers to national standard. In addition, GB/Q refers to the national mandatory standards, GB/T refers to the national recommended standards, T refers to the recommended meaning, GB/Z refers to the national guiding standards, Z refers to the guiding meaning.

Generally, the threshold of GB and GB/Q is lower because it is mandatory and must comply with the standard. There are many companies with requirements higher than GB. When buying cooking oil, we'd better choose the one that complies with GB. If not, it should at least meet the GB/Q standard. Because this standard is mandatory, it is the minimum safety standard.

Buying cooking oil, you should look at the packaging: double-check the bottle (or barrel) of the trademark, pay particular attention to the factory date and shelf life, do not buy "three no" (no manufacturer's name, no address, no quality standard code) of cooking oil. Look at the transparency: good quality cooking oil transparency, not cloudy; otherwise poor quality. Look at the sediment: quality cooking oil without sediment and suspended matter. Otherwise the quality is poor.

Cooking oil purchase method:

One should look at the color, in general, the higher the degree of refining, the lighter the color of the oil. Of course, all kinds of vegetable oil will have a unique color, it is impossible and unnecessary to refine to no color.

The second should look at the transparency, to choose a clear and transparent oil, the higher the transparency the better.

Three to smell odorless, take one or two drops of oil in the palm of your hand, hands rubbed hot, smell no odor (harry or irritating smell), if the odor do not buy.