- 用于吸出或挤出说或其他液体
- 输出颗粒、粉末或粘液
- 输送油类或化学物质
- To suck out or extrude water and liquid material
- transport granule, powder, and mucilage
- transport oils and chemicals

- 优良的耐高压性和抗震性
- 良好的耐化学制剂和耐磨性
- 长期使用无老化现象
-Excellent at durability against pressure and shock
- Good  durability against chemical agent and abrasion
- No symptom  of senility in spite of long-term use