Due to the different characteristics of materials and adhesives, the drying speed, viscosity, and usability may be affected in actual use based on the properties of the materials and adhesives. If you are not familiar with such situations for the first time, you can consult customer service or free samples in advance. After receiving the glue poured into the machine, if there are no quality issues, it cannot be returned (the glue cannot be resold if it is not cleaned thoroughly). After purchasing, it is assumed that there is understanding of the situation to avoid misunderstandings in the future. Thank you all for your understanding!
James