... 4; Air flow:53L/S Handy vacuum cleaner:Type :JIAMEI BF576A1. round stainless steel tank for BF575, solid and durable, not ... easy to be rusty. semitransparent plastic tank for BF576A,acidproof and anti-alkalis, and collision resistance2. silent ... , and base.7. suitable for the large-scale work shops, factories, stores and other kinds of cleaning field. Multifunctional auto vacuum cleaner