2. Whether it contains harmful substances is hard to say, and it may have little influence within the scope of the specification. As for whether it is healthier than wheat flour, let's get what we need. Because miscellaneous grains noodles mainly rely on a large number of vitamin B family and dietary fiber, compared with refined wheat food, it is beneficial to people now.
3. The ordinary cold noodles in restaurants should be bought in the market and processed less by themselves. There should be no glue, but there are additives.