NAICS Code 325991 — Custom Compounding of Purchased Resins

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 32599 (All Other Chemical Product and Preparation Manufacturing).

Code	325991
Title	Custom Compounding of Purchased Resins
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	600 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in (1) custom mixing and blending plastics resins made elsewhere or (2) reformulating plastics resins from recycled plastics products.

Cross-References.

Is a business under 325991 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 325991 qualifies as a small business if it does not exceed 600 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 325991 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	325	Chemical Manufacturing
Industry Group	3259	Other Chemical Product and Preparation Manufacturing
NAICS Industry	32599	All Other Chemical Product and Preparation Manufacturing
National Industry	325991	Custom Compounding of Purchased Resins

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
3087	Custom Compounding of Purchased Plastics Resins

Related National Industry codes

• 325992 — Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing
• 325998 — All Other Miscellaneous Chemical Product and Preparation Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.