Coliter® is a national standard drafting unit for multiple Chinese valve standards and holds comprehensive global certifications ensuring product safety, quality, and compliance. We are certified under ISO 9001:2015 (quality), ISO 14001:2015 (environment), and ISO 45001:2018 (occupational health), and hold CE (EU), CQC (China), France ACS, Germany DAKKS, and BSCI approvals. Our products meet drinking water safety requirements with national Sanitary Permits and are recognized as Zhejiang High-Tech SME and AAA Integrity Enterprise. These credentials reflect our commitment to excellence in fluid control technology.
| No. | Patent Title | Announcement No. | Date |
| 1 | Handwheel for Valve | CN304927947S | 2018-12-04 |
| 2 | Vertical Check Valve | CN305049766S | 2019-02-26 |
| 3 | Air Release Valve | CN305245832S | 2019-07-05 |
| 4 | Ball Valve (PPR) | CN306664576S | 2021-07-06 |
| 5 | Gas Shut-off Valve | CN307351042S | 2022-05-17 |
| 6 | Manifold Valve | CN307594982S | 2022-10-14 |
| 7 | Manifold Body | CN307601509S | 2022-10-18 |
| 8 | Gas Shut-off Valve | CN307653079S | 2022-11-11 |
| 9 | Gas Shut-off Valve | CN308008456S | 2023-04-28 |
| No. | Patent Title | Announcement No. | Date |
| 1 | Lockable Ball Valve | CN210050376U | 2020-02-11 |
| 2 | Filter Ball Valve | CN210069023U | 2020-02-14 |
| 3 | Lockable Filter Valve | CN210623660U | 2020-05-26 |
| 4 | Anti-misoperation Lockable Valve | CN210637585U | 2020-05-29 |
| 5 | Anti-theft Lockable Valve | CN210687204U | 2020-06-05 |
| 6 | Pre-meter Gate Valve with Check | CN214579105U | 2021-11-02 |
| 7 | Magnetically Locked Pre-meter Gate Valve | CN214617928U | 2021-11-05 |
| 8 | Tip Gas Valve with Flow Cutoff | CN214617910U | 2021-11-05 |
| 9 | Adjustable DP Bypass Valve for Manifold | CN214662312U | 2021-11-09 |
| 10 | Magnetically Locked Non-return Ball Valve | CN214662207U | 2021-11-09 |
| 11 | Lockable Anti-disassembly Pre-meter Valve | CN214662206U | 2021-11-09 |
| 12 | Telescopic Pre-meter Valve with Check | CN214699359U | 2021-11-12 |
| 13 | Gas Shut-off Valve | CN217056474U | 2022-07-26 |
| 14 | Gas Pipeline Shut-off Valve | CN217898923U | 2022-11-25 |
| 15 | Digital Display Temp Control Knob | CN217927458U | 2022-11-29 |
| 16 | Magnetically Locked Valve | CN218670862U | 2023-03-21 |
