| 1. | Verification regulation of mechanical pressure gauge 机械式井下压力计检定规程 |
| 2. | Model 3102 mechanical pressure switch with low leakage rate 低损耗率的机械压力开关 |
| 3. | Mechanical pressure switch for oem - applications 用于oem应用的机械压力开关 |
| 4. | Mechanical pressure switch block type with rotatable case 方型机械压力开关,可旋转外壳 |
| 5. | Mechanical pressure switch with low leakage rate 低损耗率的机械压力开关 |
| 6. | Mechanical pressure switch , changeover contact 机械压力开关,切换接点 |
| 7. | Mechanical pressure switch , 1 nc , no 机械压力开关, 1个常闭点常开点 |
| 8. | Mechanical pressure switch , changeover contact , negative pressure 机械压力开关,切换接点,负压 |
| 9. | Mechanical pressure switch , 1 nc , no , positive gauge pressure 机械压力开关, 1个常闭点常开点,正表压 |
| 10. | Mechanical pressure switch , changeover contact , positive gauge pressure 机械压力开关,切换接点,正表压 |