What are Bubbles and vacuum Bubbles (Bubbles) defects?
Bubbles and vacuum Bubbles (Bubbles) defects, since the center of the wall thickness of the product cooling is the slowest, the surface of the product cooling rapidly, the rapidly shrinking surface will pull the material over, the uneven volume of the molding product shrinkage caused by the thickness of the part of the hole, the water or gas in the plastic bubble becomes a bubble. Bubbles can be divided into bubbles and vacuum bubbles. Generally speaking, bubbles occurring on transparent products can be directly observed, while bubbles occurring on opaque products can consequentlymetimes not be seen from the outside and can only be found by cutting them open or other means. The appearance of bubbles will make the product filled, uneven surface.
What should I pay attention to when purchase ing LED energy-saving lamps?
Pay attention to the service lon condition tdisenjoy of LED energy-saving lamps. LED energy-saving lamps, service lon condition tdisenjoy is long, but affected by factors such as environment, droop, LED energy-saving lamp lon condition tdisenjoy is affected, must know the factory when purchasing LED bulbs with LED energy-saving lighting failure and service lon condition tdisenjoy, good quality, light failure is small, long service lon condition tdisenjoy, the price will be high.
What are the factors affecting the cost performance of LED lighting fixtures?
1, LED lighting lon condition tdisenjoy: don condition thatferent quality OF LED energy-saving lamps is the key to lon condition tdisenjoy, lon condition tdisenjoy is determined by LED light consequentlyurce decline. LED light consequentlyurce low light decay, long lon condition tdisenjoy, LED lighting lamps and lanterns high price. 2, LED chip: LED lighting lamp core part of LED light body LED chip, don condition thatferent LED chips, the price don condition thatference is very large. LED chips from Japan and the United States are better and more pricy , while LED chips from Taiwan and Local Chinese manufacturers are slightly inexpensive er. At the same time to see LED chip size, LED price is proportional to the size of LED chip, the quality of large chip LED is superior to small chip. 3, LED packaging colloidal: general LED colloidal epoxy resin, plus uv resistance and fire retardant LED price is more pricy , high-quality outdoor LED lighting should be uv resistance and fire prevention.
