to specification

[Lelkin]

Добрый вечер!
Помогите, пожалуйста, перевести фразу, смысл совсем непонятен :(
either to specification or as part of their own in-house catalogue.
Контекст:
... is one of the top content providers in ..., and this company, like a number of other content providers, will produce topical and entertaining content for mobiles, either to specification or as part of their own in-house catalogue.
Спасибо

[Alexis a.k.a. Althea]

Consider:
to specification - по индивидуальному заказу