The safety of a window and door handle depends on its design and the quality of its materials. Some window and door handles have locking mechanisms that can add to the security of doors and windows. These locking mechanisms may be simple buttons or knobs, or more complex electronic or mechanical systems. However, safety does not only depend on the handle itself but also depends on the material and structure of the door and window itself, locks, installation and use and other factors. Therefore, when purchasing window and door handles, all these factors should be considered comprehensively to ensure the overall safety of doors and windows. In addition, the quality of window and door handles of some well-known brands is guaranteed, and it is recommended to choose these brands for better safety and reliability.

Installing window and door handles is usually a relatively simple process that requires only a few basic tools to complete. Here are some general steps for installing window and door handles:

Prepare tools and materials: You need to prepare the necessary window and door handles, screws, nuts, bolts, screws and other accessories, as well as basic tools such as screwdrivers, wrenches, and pliers.

Determine the installation location: Determine the installation location of the window and door handle, and mark the location of the hole on the door and window.

Drilling: Use a power drill and awl to drill the marked holes, taking care that the diameter and depth of the holes should match the size of the screws or bolts required for the window handle.

Install the handle: Install the window and door handle to the door and window through the hole, and fix it with screws, nuts, bolts, screws and other accessories.

Adjust the handle: After the installation is complete, check whether the handle can be opened and closed normally, and use a wrench or pliers to make fine adjustments if necessary.

Clean Windows and Doors: Clean windows and doors to remove any dirt or debris that may have developed during installation.

Please note that different types and brands of window and door handles may have different installation methods, so it is best to read the installation instructions carefully and follow the instructions before installation. If you have no installation experience or are unsure how to do this, seek professional help.