Blackstone Consulting Blackstone Consulting, Inc. (BCI) is a company that provides environmental, security, facilities maintenance, staffing, and food service management solutions. | ![]() GEN-KA Facility Management GEN-KA Facility Management (Η ΓΕΝ-ΚΑ Facility Management) is a company that provides technical maintenance and cleaning services. | ![]() Halma Halma is a holding group providing hazard detection and life protection solutions through its subsidiaries. | |
Founding Date | Founding Date 1991 | Founding Date 1981 | Founding Date 1894 |
Type | Type Private | Type Private | Type Public |
Tags | |||
Locations | Locations Los Angeles, US HQ | Locations HQ | |
Employees | Employees 8633% increase | Employees 1413% decrease | Employees 9,000 |

GEN-KA Facility Management (Η ΓΕΝ-ΚΑ Facility Management) is a company that provides technical maintenance and cleaning services.
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Halma is a holding group providing hazard detection and life protection solutions through its subsidiaries.
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