First of all, you have registered, so you have a business license or a self-employed license. Then you need to pay attention to the following things: 1. Do you have any business projects for producing glass water in your business license? If not, you need to go to the industrial and commercial department to increase your business projects. 2. Do you need a certificate or license to produce glass water? If so, you should get these certificates first. 3. See if your registered trademark category includes the item of glass water (similar category is also acceptable). If not, you have two choices, either apply for adding the trademark category or directly use your trademark on your glass water. In the latter case, you may infringe, or others may use your trademark on the glass water, and you can't stop it.