Techno Products Development Pvt. Ltd. Supplies Bevel Helical Gear Boxes. Techno Products Development Pvt. Ltd. Is an ISO 9001:2000 certified company. The Bevel Helical Gear Boxes are designed for torques ranging from 170 to 16,800 Nm. The system comes with integrated adjustable frequency drive up to 10 HP [7.5 kW]. It also has a Power rating up to 60 HP [45 kW].