Door tensioner can be widely used in logistics, freight tying and cargo loading and unloading. Light weight, easy to use, soft and easy to bend, low tension, wear resistant, long life raw material (polyester silk), moisture resistant, can prevent damage caused by wind and frost. Due to its high resistance to corrosion, it can protect items in the same time. Manual Day Ring Tensioner Direct All Yaletex tapes are heat treated and stretched according to EN 12195-2. The length and load capacity of the products can be customized upon request. As a partner of many well-known brands, EHSY guarantees the occupational health of its employees, a safe environment and a bright future with its outstanding quality and service. Manual day ring tensioner direct belt conveyor fixed winch tensioning device, can be set up on its automatic control system to form an automatic tensioning device, is a modern large belt conveyor in the form of widely used tensioning, due to automatic fastening structure and control of the tensioning device due to the device's automatic tensioning process and become complex; automatic tensioning and fixed tensioning device is the difference between it tensioner material sensing elements and control system, because the bulk material belt conveying equipment using environment is very poor, the impact on the sensing element and control system is great. The design and use of practical automatic tensioning devices must fully consider the impact of the environment. To solve the problem, various automatic tensioning devices have been proposed or used; the method distinguishes the automatic tensioning device from the stable and slave type.