Whether I need to contact the buyer when changing Temu packaging depends on the specific situation. Generally speaking, if the packaging change involves changes in the appearance, size or material of the product, it may affect the display, sales and transportation of the product. In this case, it is a safer approach to contact the buyer for communication and coordination. Buyers usually have an in-depth understanding of the details of the product and market demand. They can provide professional advice and opinions to help sellers better meet market demand and improve sales performance. Through communication with buyers, sellers can understand the buyers' views and suggestions on packaging changes, so as to better adjust and optimize product packaging and improve product competitiveness and market share. However, if the packaging change is just a simple change of labels, stickers and other minor changes, and does not involve the core attributes and market demand of the product, then the seller may not need to contact the buyer and can change the packaging by himself. In short, when changing Temu packaging, sellers need to judge whether they need to contact the buyer based on the specific situation. If necessary, it is recommended to communicate with the buyer in time to ensure that the packaging change can proceed smoothly and achieve the desired effect.