| Employer Name | Site is at | Site | Required | Applicant's PWM | Officers' Stay |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Woodlands |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Bedok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Tampines |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SO | Novena |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Yishun |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Yishun |
| Trek Investigations & Security Management Services Pte Ltd | East | Condominium | SO | SO | Sembawang |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SSO | Pasir Ris |
| Trek Investigations & Security Management Services Pte Ltd | West | Industrial / Factory | SO | Nil | Jurong East |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | CSO | Toa Payoh |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | Nil | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SS | Bukit Batok |
| Trek Investigations & Security Management Services Pte Ltd | Central | Commercial | SO | CSO | Ang Mo Kio |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Sengkang |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Trek Investigations & Security Management Services Pte Ltd | Island Wide | - | OE | SSS | Pioneer |
| Trek Investigations & Security Management Services Pte Ltd | Central | Condominium | SO | SO | Bukit Panjang |
| Trek Investigations & Security Management Services Pte Ltd | East | Condominium | SO | SO | Lavender |
| Triple ‘S’ Protection Pte Ltd | Island Wide | - | OE | CSO | Bedok |
| Employer Name | Site is at | Site | Required | Applicant's PWM | Officers' Stay |
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