In 2011, the National Development and Reform Commission announced that the ban on the sales of 100W and above incandescent bulbs would take effect in October 1, 2012. As the enforcement day is drawing near, we believe that now it has become the critical stage for the transition from conventional lighting to LED lighting. As the incandescent products are gradually phasing out and supportive policies of the SSL lighting industry are further introduced and implemented, LED lighting is faced up with a faster development than ever before.
Over these years, with the rising living standards and growing concerns over energy and environment, consumers have been raising their expectations for energy-saving and environment-friendliness as well as a healthy and comfortable life. In the aspect of lighting, green, energy-saving and healthy products are gradually turning into the mainstream. With excellent performance in energy saving, environment protection, efficiency and use life, it is inevitable that LED will be widely used.
1、Double Pack Check
（1）Find the product trademark and certification marks such as 3C, CE, UL, GS certifications. In addition, good quality products also have good trademark printing, clear and indelible when wiped with a soft and damp cloth.
（2）Check whether items like rated voltage, voltage range, color temperature, product notes, safety tips and applicable environment are clearly marked.
2、Price Comparison
Due to the specialty of LED luminaries production, its price is relatively high. China-made products are priced from RMB 40 while price of imported ones starts higher.
3、Exterior Examination
First examine if the product has a rough exterior. Is there any glue not yet cleaned up? Any screw protruding on the fixed plane? Is the screw color consistent with the exterior house color?
4、Lighting Test
The color change of a LED bulb must be carefully observed after it is lit up. If it changes from yellow into white or white into bluish white in short time, it is not a good buying choice because there are two explanations for the case: 1. power supply problem; 2. LED light source selection mistake. Moreover, the light color should confirm to standard in uniformity, i.e. without flicker. After the LED luminaries are turned on, its heat dissipation can be measured with surface temperature through direct touch. If the product surface temperature keeps rising for an hour instead of stabilizing in as long as 30 minutes, do not choose the product. The reason is that its use life will be shortened because of heat dissipation difficulty.
