Industry:
- 全部
- TE / Schneider
- SIEMENS / SIEMENS
- FUJI / Fuji
- CHINT / Chint
- domestic
- ABB
- LG
- Shanghai People
- Mitsubishi
- Shihlin
- TAIAN / Adventist
- DELIXI / West Germany
- Tengen
- TISH / Tianshui
- OMRON / Omron
- MOELLER / Admiralty Muller
- import
- Schneider
- other
- 全部
- Opening and closing
- normally open type
- type conversion
- two open two closed
- normally closed
- three opening and closing
- three open three closed
- four
- other
