"Samanian Technical and Engineering Company" (STE Co.), founded by skilled engineers in Tajikistan, consulting engineers and two leading construction firms. "Aban Pazhoh" Consulting Engineers offers extensive infrastructure and civil consultancy internationally. "Ariana Tunnel Sadd Co." operates as a civil contractor in and Tajikistan, while "Shahran Sazeh Project and Construction Management Co." focuses on civil project management in Sri Lanka. Collectively, they engage in planning, designing, consulting, supervising, and managing projects across multiple countries including, Tajikistan, and Sri Lanka.