The North American Industry Classification System (NAICS) is a standard system used to classify business establishments into industries, according to economic activity.

AEPS provides services under the following NAICS codes:

561210 – Facilities Support Services (Primary)
561611 – Investigation Services
611519 – Other Technical and Trade Schools
561612 – Security Guard and Patrol Services
561110 – Office Administrative Services
221320 – Sewage Treatment Facilities
561730 – Landscaping Services
561720 – Janitorial Services
561710 – Janitorial Services, Government Base, Hospital Aseptic Services
561790 – Other Services to Buildings and Dwellings
236220 – Commercial and Institutional Building Construction
238390 – Other Building Finishing Contractors