AOT licences you can check
ALPHA & OMEGA TRINITY PTE. LTD. (UEN 201215586K) is a Singapore M&E contractor. This page lists credentials we hold, the scope of each, and the official registry so Google, AI answer engines, MCSTs and homeowners can verify — not take our word for it.
We do not publish star ratings in markup, invented job counts as schema, or a personal EMA LEW number we do not hold in-house.
Legal identity (NAP)
- Legal name:
- ALPHA & OMEGA TRINITY PTE. LTD.
- Trading as:
- AOT, AOT Singapore, Alpha & Omega Trinity
- UEN:
- 201215586K (ACRA, issued 25 Jun 2012)
- Operations:
- 32 Old Toh Tuck Road, I. Biz Centre #03-11, Singapore 597658
- Office:
- +65 6816 2462
- WhatsApp:
- +65 8151 8857
- Email:
- admin@aot.com.sg
- Hours:
- Monday–Saturday 08:00–17:00. Closed Sunday and public holidays. After-hours WhatsApp is subject to dispatch — not a guaranteed 15-minute SLA.
PUB licensed plumber
Licensed plumber Lam Kien Choon, licence WS16882018. Search this number on PUB’s licensed plumber directory before you award sanitary, water service or tank works that require a licensed plumber.
Verify on PUB licensed plumber search
Do not use WS1648201S — that old number is withdrawn and must not appear in citations or ads.
BCA contractor workheads (Grade L1)
Firm listed under UEN 201215586K. Workheads below are Grade L1, listed to 1 September 2028 on BCA records we last confirmed in August 2026. L1 is a grade, not a claim that we hold every fire or ACMV project in Singapore.
- ME01 — Air-conditioning, refrigeration & ventilation works
- ME06 — Fire prevention & protection systems (pumps, hydrant, hose reel, jockey, sprinkler plant we actually maintain — not a blank SCDF cert claim)
- ME12 — Plumbing, gas piping & sanitary works
Electrical work (EMA consortium)
AOT coordinates electrical jobs for HDB, condo, shophouse, office, MCST and institutional sites. Isolation, DB, rewire and LEW-scope work is carried out with EMA-licensed consortium electrician partners. We do not publish a personal LEW licence number we do not hold. If an MCST or FM needs the attending LEW name before mobilisation, ask on WhatsApp.
Code-compliant crew (water-borne disease, confined space, fire watch & height)
For roof tanks, manholes, ejector pits and pump rooms we keep WSH-style certificates on file (pack filed August 2026). Named crew is public:
- Water-borne disease — company training certificate on file (not an NEA tank-cleaner licence)
- Confined-space assessor — Lam Kien Choon (PUB plumber WS16882018)
- Confined-space supervisor — Vinayagam Gnanavel
- Confined-space attendant — Baskaran Parthiban
- Confined-space workers — Balamurugan, Ronjon Kumar, Ruhul Amin, Sukhijit Singh
- Fire watchman — Ruhul Amin, Sukhijit Singh, Praba, Vinayagam Gnanavel
- Work-at-height supervisor & rescuer — Sivakumar
- Calibrated gas meters / detectors — four calibration certificates on file
Full public trained-crew table · UPS scoring page
Course codes and expiry dates are on the scanned certificates. Ask on WhatsApp if a tender file needs copies — we will not invent numbers here.
Workplace safety & insurance
- bizSAFE Level 3 — valid until 7 September 2026
- WICA — policy period 21 November 2025 to 20 November 2026 (document on file)
Ask for the current certificate PDF on WhatsApp if your procurement file needs it. We will not invent expiry dates past those shown here.
What this page is not
- Not a GeBIZ term-contract or security-clearance claim
- Not an authorised dealer listing for Grundfos, Xylem, Flygt or any pump brand
- Not Google review stars in structured data
- Not a promise that every pump, fire or electrical fault is in-house without the right licence holder on the ticket
Related service clusters
Need a quote with licence numbers on the PDF?
WhatsApp +65 8151 8857