The incandescent lamp ban in major countries and regions in the world entered the batch effective phase in 2014. On January 1, 2014, the United States announced that it would no longer produce and sell 60-watt and 40-watt incandescent lamps. At the same time, Canada also offic

The new iPhone brings a slim design and retrieves a rounded design that has been around for a generation of iPhones. The back hole is similar to the iPhone 5S. It is worth noting that there is a hole between the flash and the camera for the microphone. . One side of the housing is a SIM card slot,

Since 2013, the prosperity of the home appliance industry has continued to increase, and the production and sales of major home appliances have steadily increased. Affected by the New Deal's withdrawal from subsidies, sales in May showed a swift growth. After the full withdrawal of sti

A transistor is also called a semiconductor transistor. Since it operates at the same time as both electron and hole carriers in the semiconductor, it is a bipolar device, also called a bipolar junction transistor. There are many kinds of crystal transistors and they can be divided into d

The adjustable internal resistance battery is a DC power supply designed for physics experiment teaching. It is a single lead battery with a certain capacity, the electromotive force is relatively stable, and its internal resistance is relatively large and continuously adjustable. Since the adj

The adjustable internal resistance battery is a DC power supply designed for physics experiment teaching. It is a single lead battery with a certain capacity, the electromotive force is relatively stable, and its internal resistance is relatively large and continuously adjustable. Since the adj

Nowadays, the application of the battery is seen everywhere in our lives. Therefore, the charger has become an indispensable role in our lives. However, we often encounter such problems, the charger fever, and the charger. Can not charge the battery, the charger will not be long before it

OFweek Communication Network, Shanghai, November 5, 2013-"Smart" jointly organized by OFweek China High-Tech Industry Portal and China International Industry Fair, the largest industrial exhibition in the industry, jointly organized by OFweek Optical Communication Ne

Tianlong Optoelectronics (300029) said in the Shenzhen Stock Exchange's interactive and easy-to-answer investor question that the controlling shareholder of the company reduced its shareholding of 1 million shares on November 27, and the company did not announce it because it did not meet the d