Not necessarily. If you buy pure corn flour online, it depends on whether the manufacturer's trademark is formal. If it is pure corn flour produced by regular manufacturers, it is true, but there are also some businesses selling fake and shoddy products. Corn flour is a noodle made of corn flour, which is yellow in color and soft in texture. Compared with ordinary noodles, pure corn noodles are healthier because they contain no gluten and are suitable for people who are allergic or sensitive to gluten.