ordinary goods; average-quality article
Refers to items of standard or average quality, not special or premium. Often used in commercial contexts to distinguish from high-grade or luxury products.
This store carries a wide range of products, from ordinary goods to luxury items.
Even the standard-grade items are of sufficient quality.
普及品 emphasizes widespread availability and affordability, whereas 普通品 simply denotes average quality.
Compound of 普通 (ordinary) + 品 (goods). The exact historical derivation is uncertain, but the meaning is transparent from its components.