Voting companies emphasize that their products undergo rigorous testing and independent review required by federal laws for certification.

Nutro stated that their products undergo rigorous safety testing and are 100% safe.

The product is currently undergoing full scientific and clinical testing.

The product underwent massive development in the following years.

Throughout the company's history and growth their main product has evolved, and consequently, undergone several name changes.

These products underwent interior updates in 1992 and 1995, remaining in production until the end of the 2001 model year.

Tested products undergo independent certification of function and capacity.

These products must undergo more effective supervision so that trade in them does not have adverse effects on the market.

The proposed changes also remove the lack of clarity about when a product has undergone first processing or transformation.

The same principle applies where the origin rules require the products to undergo particular processes.