1. Avoid the handle of the collision and friction sharp objects.
2. Avoid the handle of all types of cleaning chemicals or coatings, such as: paint thinner, etc. plitur.
3. Avoid the handle of all types of oil such as oil, grease and others.
4. Avoid the handle of all kinds of adhesives such as tape, stickers, duct tape, plaster and others.
5. Use a soft, dry cloth to clean the handle. So do not be cleaned with any cleaning fluid. Enough with the soft, dry cloth.
6. Handle and cylinder lock should be installed after the door finished to completion.
7. Installation of products should be done after all the conditions of the room was clean and odorless paint / chemicals of any kind, because the air that is ‘sharp’as it can damage the outer layer of products that will arise bercak-bercak/spot black on the product.