TOP ONE (ASIA) ENGINEERING COMPANY LIMITED

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TOP ONE (ASIA) ENGINEERING COMPANY LIMITED (registered gas contractor 930-21)

TOP ONE (ASIA) ENGINEERING COMPANY LIMITED is a registered gas contractor, RGC number 930-21, on EMSD’s Overall Registered Gas Contractor List, registered for Class 1, Class 2, Class 3, Class 4, Class 5, Class 6, Class 7, Class 8. Its address on the list is Room A & B, 12 Floor, Sun Fai Commercial Centre, 576 Reclamation Street, Mong Kok, Kowloon. Confirm the registration on EMSD’s list before relying on it.

Name: TOP ONE (ASIA) ENGINEERING COMPANY LIMITED
Chinese name: 統一(亞洲)工程有限公司
RGC number: 930-21
Classes of gas installation work: Class 1 LPG hotplates (cylinders)
Class 2 Domestic pipework and meters
Class 3 Domestic pipework, meters and appliances
Class 4 Domestic appliances servicing
Class 5 Non-domestic pipework and meters
Class 6 Non-domestic pipework, meters and appliances
Class 7 Non-domestic appliances servicing
Class 8 Industrial appliances (process)
Telephone: 6101 3189
Address: Room A & B, 12 Floor, Sun Fai Commercial Centre, 576 Reclamation Street, Mong Kok, Kowloon
九龍旺角新填地街576號新輝商業中心12樓A&B室
District: Yau Tsim Mong District
Check it: EMSD’s list of registered gas contractors — look for RGC number 930-21

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What the classes cover

Class 1: Installation, commissioning and routine maintenance of a domestic gas appliance which is a hotplate supplied by not more than one cylinder.
Class 2: Installation of a service pipe, and any gas flow control, primary meter or primary meter installation used in connection with such pipe, in domestic premises; and an installation pipe in domestic premises.
Class 3: Installation and commissioning of a service pipe, and any gas flow control, primary meter or primary meter installation used in connection with such pipe, in domestic premises; an installation pipe in domestic premises; and a domestic gas appliance.
Class 4: Installation of domestic gas appliances to existing, adjacent gas supply points and commissioning and servicing of domestic gas appliances.
Class 5: Installation of a service pipe, and any gas flow control, primary meter or primary meter installation used in connection with such pipe, in non-domestic premises; and an installation pipe in non-domestic premises.
Class 6: Installation and commissioning of a service pipe, and any gas flow control, primary meter or primary meter installation used in connection with such pipe, in non-domestic premises; an installation pipe in non-domestic premises; and a non-domestic gas appliance.
Class 7: Installation of non-domestic gas appliances to existing, adjacent gas supply points and commissioning and servicing of non-domestic gas appliances.
Class 8: Installation, commissioning and servicing of a gas appliance which forms part of an industrial process.

EMSD’s definitions (Gas Safety Portal).

Getting there

Nearest MTR: Prince Edward · 278 m, about 3 min on foot
Nearest MTR exit: Prince Edward Exit C2 · 223 m, about 3 min on foot
Nearest car park: Pioneer Centre Car Park · 200 m, about 3 min on foot
Nearest public toilet: Mong Kok Road Public Toilet · 163 m, about 2 min on foot
Bus & minibus stops within 300 m: 49

All registered gas contractors in Hong Kong · Registered gas contractors in Yau Tsim Mong

Data source: Electrical and Mechanical Services Department, Overall Registered Gas Contractor List and Contractor Lists 1–3 (data.gov.hk); district boundaries from the Home Affairs Department · Data © the Government of the HKSAR · Data refreshed 2026-10-05 · EMSD updates the lists monthly; synced weekly