Is it illegal if the product I produce has the same ingredients and formula as others, but the trademark and name are different? Individuals find a foundry to process.

The unique products produced by ourselves can be patented, which can continue to make profits and prevent others from stealing technology infringement. On the contrary, no matter what you do, you must not infringe upon the legitimate rights and interests of others. If you feel suspected of infringement, you can take effective measures to make it basically different from it and avoid unnecessary trouble.