in-house manufactured goods; own company's products
Refers to products manufactured by one's own company, as opposed to those sourced from outside.
We are confident in the quality of our in-house products.
We are focusing on the development of our own products.
自社 means 'one's own company'; 自社製品 is the compound noun for the products made by that company.
製品 means 'manufactured goods' or 'products'; 自社製品 specifies that they are made in-house.
Compound of 自社 (one's own company) + 製品 (manufactured goods).