Sınırlı Sorumlu Kuzey Tarımsal Kalkınma Kooperatifi is an agricultural cooperative established by 100 hazelnut farmers in the village of Paralı, Karasu district, Sakarya, Türkiye. The cooperative brings together local producers for the cultivation, processing and marketing of hazelnuts, and sells its processed products (roasted hazelnuts, hazelnut paste, chocolate products) under its brand Kuzey Fundux. Through sustainable hazelnut farming and value-added processing, the cooperative contributes to the regional agricultural economy and to the livelihoods of its member farmers.