If your own seal is not filed with the Public Security Bureau, it will not be recognized in some places, but if your seal is the only one that can represent the name of your company, and if someone takes your receipt to identify the quality problems of your goods, you will still be responsible and have the same legal effect as your signature! You'd better use a recorded stamp, or someone will copy your stamp and do something bad, and you will also be implicated, just like a car with a deck of cards!