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特点：features
1. 采用结实的铝合金外壳，不锈钢或塑料提手，使用轻便，功能全面。
Portability and versatility with a tough, aluminum cover and stainless steel or plastic handle.
2. 提供了一个洁净的真空环境，不会对系统产生污染。
Provide a clean vacuum and won’t contaminate your system.
3. 独特的皮膜设计减少磨损，延长工作寿命。
Unique flat diaphragm design reduces wear and tear for long service life.
4. 内设过热自动保护装置防止电机损坏，延长泵的寿命。
Built-in heat-triggered protector prevents motor damage and extends pump life.
