Yan Chunhui further stated that in 2011, the group will increase 20 MOCVD and increase the output of 6 billion medium-power LED chips. At the same time, the Group will also strengthen investment in technology research and development, and strive to make the Group's technology ahead of the world to catch up with the world's advanced level. He also expects the Group's 2011 output value to reach RMB 600 million.
Yaweilang Optoelectronics (China) Co., Ltd. was established in 2009, located in Haiyan County Development Zone (Xitangqiao Street), Zhejiang Province. It is mainly engaged in R&D and production of LED epitaxial wafers and chips. Currently, it has more than 130 patents. Gaogong LED was rated as “2011 China's LED industry's most promising potential†enterprise.
In 2009, Haiyan County planned the 1000-acre in the core area of ​​the county development zone to build the Hangzhou Bay LED Industrial Park. At present, in addition to Yaweilang, eight new energy industry projects such as Xiawei Optoelectronics LED Lighting, Jinghong Solar Silicon Wafer and Zhanshuo LCD LCD Module have entered the Industrial Park. In the first quarter of this year, Guangda High-tech invested a total of 100 million yuan in MOCVD high-end equipment manufacturing, and the company's total investment of 10 million US dollars in LED lighting manufacturing projects have also entered the park.
Speakers are one of the most common output devices used with computer systems. Some speakers are designed to work specifically with computers, while others can be hooked up to any type of sound system. Regardless of their design, the purpose of speakers is to produce audio output that can be heard by the listener.
Speakers are transducers that convert electromagnetic waves into sound waves. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves.
The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. A speaker system's ability to accurately reproduce sound frequencies is a good indicator of how clear the audio will be. Many speakers include multiple speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.
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