noun which may take the genitive case particle 'no'
made in-house; made by one's own company
Used to describe products, parts, or software developed and manufactured internally rather than outsourced.
この部品は自社製です。
This part is made in-house.
自社製ソフトウェアを導入した。
We introduced software developed in-house.
外注 means outsourcing or subcontracting, the opposite concept of 自社製.
Compound of 自社 (one's own company) + 製 (made, manufactured).