Hardware is a modern construction industry an essential building materials, both windows and doors industry, plumbing industry, the cabinet industry, the furniture industry, decoration industry, etc., will be applied to a wide range of hardware products, small hardware, not only in these industries play a very important role in connecting, bearing role, but also has a very highlighted decorative role, but if you install or use these products contain hardware process, not to its attention, it can cause its small damage to the hardware pieces, how to prevent damage to the hardware it? Hardware damage prevention measures: 1, the selection of hardware accessories models, specifications, and performance should be consistent with existing standards and relevant regulations of the State, and with the choice of plastic doors and windows to match. 2, the width of more than 1m of sash windows, or install double-glazed windows and doors, should set up a dual pulley, or use the scroll wheel. 3, friction stay hinges not use aluminum alloy, stainless steel should be used. 4, with the fastening screws mounting hardware must be equipped with a metal liner, liner thickness should be at least more than twice the distance of the fastener teeth. Not fastened to the plastic profiles, nor the use of non-metallic liner. 5, metal parts should be installed last, doors lock, handle, etc. should be in the window sash into the box and then assembled to ensure the correct position, switching and flexible. 6, hardware maintenance after installation should pay attention to prevent rust corrosion. In everyday use light to light off the opening to prevent hard off hard to open, causing damage.