noun
main products; primary products; staple products
Refers to the principal goods a company or region produces, often contrasted with by-products or secondary items.
この工場の主製品は自動車部品です。
The main products of this factory are automobile parts.
当社の主製品はソフトウェアとハードウェアの両方を含みます。
Our company's primary products include both software and hardware.
主力製品 emphasizes 'flagship' or 'core' products that drive a company's business, while 主製品 is a more neutral term for main products.
Compound of 主 (しゅ, 'main') + 製品 (せいひん, 'manufactured goods'). The reading is on'yomi throughout.