handy vacuum cleaner: 1. Stainless tank 2. Solid and durable 3. For large scale workshops, factories, stores JIEBA series handy vacuum cleaner:1. round stainless steel tank for BF500, solid and durable, not easy to be rusty. semitransparent plastic tank for BF503A,BF500A,acidproof and anti-alkalis, and collision resistance2. silent motor, with powerful suction and long runtime3. anti-cracking and ...