1. YA-100              ammonia pressure gauge
2.  YA-150          ammonia pressure gauge
3. YE-150           capsule pressure gauge
4. YE-75           capsule pressure gauge
5. YE-100         capsule pressure gauge
6. YZS-102          double needle double tube pressure gauge
7. Y-40            spring tube pressure gauge
8. Y-40Z           spring tube pressure gauge
9. Y-60          spring tube pressure gauge
10. Y-60Z               spring tube pressure gauge TAG：