The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems.
A D-sub contains two or more parallel rows of pins or sockets usually surrounded by a D-shaped metal shield that provides mechanical support, ensures correct orientation, and may screen against electromagnetic interference. The part containing pin contacts is called the male connector or plug, while that containing socket contacts is called the female connector or socket. The socket's shield fits tightly inside the plug's shield. Panel mounted connectors usually have threaded nuts that accept screws on the cable end connector cover that are used for locking the connectors together and offering mechanical strain relief. Occasionally the nuts may be found on a cable end connector if it is expected to connect to another cable end. When screened cables are used, the shields are connected to the overall screens of the cables. This creates an electrically continuous screen covering the whole cable and connector system.
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Some merchants still sell high-power incandescent lamps
The reporter visited and found that incandescent lamps with a power of 100 watts or more are still easily available in some stores. In a lighting store on Huaihe Road, the reporter did not see the incandescent lamps banned on the shelves, but when the reporter asked for 100 watts of incandescent lamps, the salesperson took out a few from the warehouse. "Now most of them are Energy-saving lamps, to buy such high-power incandescent lamps, this is the original purchase, there are few."
In a hardware store, there are still 100-watt incandescent lamps on the shelves. The boss said that he did not know about the ban on sales. There are very few people who buy high-power incandescent lamps, most of which are purchased by property companies.
The reporter went to a large supermarket in Bohai Road. When the reporter proposed to buy a 100-watt incandescent lamp, the staff recommended the energy-saving lamp of the same power to the reporter. "High-power incandescent lamps are not allowed to sell, energy-saving lamps are bright and energy-saving, better than incandescent lamps."
I know that there are fewer citizens who are forbidden, and most of them will choose energy-saving lamps.
The reporter randomly asked 15 citizens on the Bohai Road whether they knew that incandescent lamps with a power of more than 100 watts were banned and 15 citizens said they did not know.
Mr. Liu said: "The energy-saving lamps were too expensive when they first came out. They also used incandescent lamps. In the past two years, the price of energy-saving lamps was acceptable, and they saved electricity. The homes basically changed energy-saving lamps."
Mr. He, who is decorating his new home, said that most of the new homes will choose energy-saving lamps, TV background walls and other places will use LED lights, will not consider high-power incandescent lamps, "LED lights are beautiful, power-saving, of course, better than incandescent lamps. â€
In 2016, incandescent lamps completely withdrew from the market
According to the "Announcement on the gradual ban on the import and sale of ordinary lighting incandescent lamps", China will gradually ban the import and sale of ordinary lighting incandescent lamps according to the power level. Import and sale of ordinary lighting incandescent lamps of 60 watts and above is banned from October 1, 2014; it is expected that by 2016, incandescent lamps will completely withdraw from the Chinese market. 
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Zhengzhou: Some merchants of 100-watt incandescent lamps are still selling citizens' preferred energy-saving lamps
After October 1, incandescent lamps of 100 watts and above have been listed as banned and have withdrawn from the historical arena. According to the "Announcement on the gradual ban on the import and sale of ordinary lighting incandescent lamps", incandescent lamps that are cheap but not energy efficient will be completely eliminated within four years. Now that the policy has been implemented for more than a week, what about the situation on the market?