1. Item number: SDSITC-1091507
2. Project Name: Rehabilitation equipment and LED display procurement
3. Project content:
First package: rehabilitation equipment;
The second package: LED display (1 block).
4. Requirements for suppliers:
First package:
(1) Registered with the administrative department of industry and commerce of the People's Republic of China with the qualification of corporate legal person;
(2) having a medical device production license or a medical device business license issued by the state administrative department;
(3) If bidding for the agent, the supplier shall provide the authorization of the equipment manufacturer or the product agent/distribution qualification certificate for the project.
The second package:
(1) Registered in the administrative department of industry and commerce of the People's Republic of China with the status of an enterprise legal person with a registered capital of 500,000 yuan or more.
Intended qualified bidders may obtain further information from the bidding agency or consult the procurement documentation.
5, the purchase price of the documents: 200 yuan per set, not refundable after the sale (if you want to mail plus another postage of 50 yuan, the tendering agency is not responsible for the loss or delay in the mailing process).
6. Time and place of the release of the procurement documents (the following are Beijing time): from July 3, 2009 to July 13, 2009, every day from 9:00 to 11:30, and from 14:00 to 17:00 It is available for sale at Room 306, 3/F, Block A, Lubang Plaza, No. 177 Shandong Road, Qingdao.
7. The quotation documents will be submitted on the day of bid opening, and the deadline for submission of quotation documents and the time for bid opening: 9:30 am on July 15, 2009, the quotation documents received after the deadline will not be accepted.
8. Submit the quotation documents and the bid opening location: the conference room on the third floor of Block A of Lubang Plaza, No. 177 Shandong Road.
9. Please inquire about this procurement document. Please contact Shandong Zhonggang Tendering Co., Ltd. before 9:00 am on July 13, 2009. (For technical inquiries, please contact the Tendering Company by letter or fax. ).
Bank: Bank of China Qingdao Sifang Branch
Account: Shandong Zhonggang Tendering Co., Ltd.
Account Company Name: Shandong Zhonggang Tendering Co., Ltd. Contact: Zhou Lin, Sun Na Tel: 0532-85727257, 85686625 E-mail: Fax: 0532-80615082 Postal Code: 266033 Address: Lubang Square, No. 177 Shandong Road, Qingdao Third floor of Block A

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.
Speaker System,Magnet Speaker Acoustic,Moving Coil Loudspeaker,Metal Frame Mylar Speaker
Jiangsu Huawha Electronices Co.,Ltd , https://www.hnbuzzer.com