Decorative lights designed to be mounted on the ceiling or wall, usually containing more than one lamp in the body, are called chandeliers. Chandeliers are used in almost every corner of the house, in all living areas.
CE marking indicates that a product has the relevant health, safety and environmental protection requirements according to European Union (EU) legislation. The official CE marking consists of the letters C and E in circle form.
The maintenance factor is multiplier, which refers to the decrease in light output caused by aging or contamination of the lamp. The maintenance factor refers to the light losses that occur over time and is also known as the loss factor.