The mystery of the longevity of car air fresheners: why do some lose their scent in a few days, while others can last for a month?
This article compares three types of car air fresheners—hanging, clip-on, and decorative ornaments—from four dimensions: diffusion principle, longevity, safety, and applicable scenarios, to help B2B customers such as promotional product buyers, gift companies, and 4S dealerships make product selection decisions. It focuses on analyzing how membrane slow-release technology achieves uniform diffusion over 30 days, and provides procurement evaluation criteria and inspection recommendations.