| 1. | Appearance quality for reciprocating rubber seals 往复运动橡胶密封圈外观质量 |
| 2. | Models of rubber sealing ring matching with pvc pipe 与pvc管道配套的橡胶密封圈规格: |
| 3. | Rubber sealing rings for lever stoppers of bottles 瓶子杆式塞用橡胶密封圈 |
| 4. | Appearance quality acceptance criteria for rubber o - rings 形橡胶密封圈外观质量检验标准 |
| 5. | Railway equipment in general . compact - rubber " o " rings 铁路通用设备.小型o形橡胶密封圈 |
| 6. | Processing of multichamber mould for rubber sealing o - ring 形橡胶密封圈多腔模具的加工工艺 |
| 7. | Rubber seals used for automobile hydraulic disc brake cylinders 汽车液压盘式制动缸用橡胶密封圈 |
| 8. | Rubber mixture of o - ring seals for fuel 燃油用o形橡胶密封圈材料 |
| 9. | Material of rubber seals used for gas supply pipes and fittings 燃气输送管及配件用橡胶密封圈胶料 |
| 10. | Design and processing of vulcanization mould for rubber sealing ring 橡胶密封圈硫化模的设计及加工 |