Daily maintenance of "Homintec" aluminum-clad wood window hardware

All operable hardware components on windows ashes and frames require regular lubrication (at least once a year) to ensure smooth use of the hardware and to prevent premature wear. Steel safety lock blocks need to be lubricated frequently to avoid unnecessary wear. In addition, the screws that fix the hardware need to be inspected regular-y.  If they are found to be loose or rusty, they must be replaced promptly on site. Please use non-acidic and resin-free lubricating oil for lubrication (you can choose sewing machine oil or salad oil)