The following Product Service Codes (PSCs) are commonly associated with NAICS 221111, Hydroelectric Power Generation

PSC 7510 Office Supplies

Products
Federal Category 6.1: Office Management Office Management Products

Includes
Crayons; Erasers; File Holders; Writing Ink; Printing Ink; Paper Fasteners; Pencils; Penholders and Pen Points; Rulers, Office Type; Art Supplies; Tape, Pressure Sensitive Adhesive

Excludes
Office Devices; Fountain Pens; Artists' Brushes; Paper Stationery; Record Forms; Mechanical Pencils.

Possible NAICS Codes
339940 – Office Supplies (except Paper) Manufacturing
459410 – Office Supplies and Stationery Retailers
322230 – Stationery Product Manufacturing
322120 – Paper Mills
325992 – Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing
424130 – Industrial and Personal Service Paper Merchant Wholesalers
424120 – Stationery and Office Supplies Merchant Wholesalers
332510 – Hardware Manufacturing

PSC H330 Inspection—Mechanical Power Transmission Equipment

Services

PSC 6130 Converters, Electrical, Nonrotating

Products
Federal Category 13.3: Electronic & Communication Equipment Electrical & Electronics Equipment

Includes
Complete Battery Charging Equipment, Nonrotating; Power Sup-plies, Multiapplication.

Excludes
Rectifying Tubes; (FSC 5960); Rectifying Crystals (FSC 5961); Rotating Equipment (FSC 6125); Transformers (FSC 5950); and Semiconductor Devices and Associated Hardware (FSC 5961).

Notes
This class includes devices employing a means other than mechanical rotation for changing electrical energy from one form to another (i.e., AC to AC, DC to DC, AC to DC, and DC to AC).

Possible NAICS Codes
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
335931 – Current-Carrying Wiring Device Manufacturing
334416 – Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing
335312 – Motor and Generator Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336611 – Ship Building and Repairing
333241 – Food Product Machinery Manufacturing
334412 – Bare Printed Circuit Board Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing