The bulb shall be firm and upright and shall not be loose or skewed. If the enamel umbrella is corroded or deformed major Cast light It needs to be replaced in time. Before using electric tools, please check whether the wiring, plug, socket, grounding and leakage protection devices are in good condition. Do not use them if they are damaged. Safety slogans, warning signs and safety operation instruction boards shall be set up on the construction site. Materials on the site shall be stacked orderly and stably and handled from top to bottom. When using hand-held electric tools, please wear personal protective equipment and the power cord should be empty. It is forbidden for non operators to use it on site major Cast light Power switches, wires and various mechanical equipment. Outdoor construction is not allowed in rainy season. Outdoor construction should be carried out after the rain is dry. The Quality Safety Department is responsible for preparing labor protection articles to ensure the safety of construction personnel.

1. Advocate the concept of environmental protection and recycling globally. Traditional lamps contain many harmful substances. If the bulb fails, harmful substances will volatilize into the atmosphere. But, Qinghai major Cast light It does not contain harmful substances at all and can protect the environment. Shandong LED ceiling lamp is recognized as a green lighting product in the 21st century. 2. Shandong LED mining lamp saves energy, has a long service life and saves maintenance costs. The power consumption of LED industrial and mining lamps in Shandong Province is generally less than one third of that of traditional lamps, and their service life is 10 times that of traditional lamps. It can be used for a long time without replacement, thus reducing the labor cost. 3， Qinghai major Cast light It can also protect eyesight. Traditional lamps use AC power, but Shandong LED industrial and mining lamps directly convert AC power to DC power without flickering, which can protect the eyes. 4. Shandong LED mining lamp has high efficiency and luminous efficiency.

1、 Disconnection. For "dead light", we should first determine major Cast light Is it short circuit or open circuit. 2、 The adhesive layer is peeled off. For some LED energy-saving project lights with vertical chips, the common reasons for dead lights are the peeling off of the bottom of the chip bonding layer and the peeling off of the bracket coating. 3、 The welding spot is burnt. In some cases, the dead light of the bulb may not be caused by the bulb itself, but also by the power supply used. 4、 Chip corrosion. The previous energy-saving floodlights and energy-saving floodlights are open circuit. The following is the condition of short circuit dead light. major Cast light There are many reasons for dead lights. Dead light may appear in every link from packaging, application to use.

major Cast light Coordination of color temperature and illuminance. The color temperature of light source is the color expression of light, major Cast light The psychological effects of light color on people include cooling and heating effects and other expansion effects. The cooling and warming effect is based on the blue-green and red orange as the two extremes of "cold color" and "warm color". It is generally believed that red has a warm feeling, while cyan has a cold and muddy feeling. The color temperature should be selected to achieve the desired lighting effect as to what kind of nightscape environment atmosphere needs to be created. The influence of color temperature on people is not only the feeling of cold and warm, but also the environmental illuminance. At low illumination levels, warm light with low color temperature is more acceptable, while at higher illumination levels, cool light with higher color temperature is more popular.