To maximize ROI, source products with hot air drying functions (50-60°C), which not only kill mites but also reduce humidity in bedding, inhibiting future growth. Cordless models with high-capacity lithium batteries (2000mAh+) offer higher retail margins due to convenience, while transparent dust cups provide visual proof of cleaning effectiveness, which is a strong selling point for consumer marketing. For bulk buyers, choosing modular designs allows for easier part replacement and lower after-sales maintenance costs.