average-quality product; common article
Refers to goods of ordinary, run-of-the-mill quality, not particularly high or low grade.
This store only carries average-quality products.
普及品 emphasizes widespread availability and affordability, whereas 並製品 focuses on the quality level being average.
Compound of 並 (なみ, 'average, ordinary') and 製品 (せいひん, 'manufactured product').