The phrase "at product level" is correct and usable in written English.
It can be used when discussing aspects or considerations that pertain specifically to a product, often in contexts like marketing, development, or analysis.
Example: "We need to evaluate the features and pricing strategies at product level to ensure competitiveness in the market."
Alternatives: "at the product stage" or "on a product basis".
This study analyzed certifications at the regional/landscape level and at product level.
The paper investigates different patterns of "learning by doing", studying learning curves at product level in a catching-up country, India.
When these factors are combined, overall increase in economic and environmental impacts occurs in the society even though improvements were made at product level.
By means of a bottom-up approach, we show with scientific evidences that policy actions at product level have the potential to solve the apparent conundrum.
Strategic release planning (sometimes referred to as road-mapping) is an important phase of the requirements engineering process performed at product level.
Economic and environmental assessments of products are commonly performed at product level in a comparative way to identify possible improvement solutions.
Something interesting needs to happen at Bloglines at a product level, or they will, inevitably, be deadpooled.
"Typically it is managed at the product level, not at the customer level, although we are beginning to see that change," he said.
And finally, the speed at which consumption cycles have increased means that factories need to be flexible not just at the product level, but at a product line level — with assembly lines able to swap out one product line for another.
Such a CBT is applied at a product level and not at a sector level, and all international prices are deflated to guarantee that import 'like' goods received a treatment similar to 'like' domestic products.
The challenge was that nobody really wanted to broadcast how much money they were spending, and even if they did, the data wasn't at the product level, it was at the basket level.
