Brief Introduction: Yuanda Health Technology (Tianjin) Co., Ltd. was established in 2001, with its headquarters located in Tianjin. It is a typical Chinese manufacturing enterprise integrating R&D, manufacturing, sales and services, as well as a national high - tech enterprise. The products of the company cover multiple fields such as water purifiers, filters and accessories, air purification products, fitness and outdoor products, and pet supplies. Yuanda Health Technology has its roots in China and has a global strategic layout. It is a leading cross - border e - commerce company that provides high - quality goods and services to global consumers.

GZ DP Anechoic T&E?Co., Ltd. is composed of a team of acoustic experts and professional engineers who have been engaged in various acoustic technology research at home and abroad for many years and have rich theoretical and practical experience.It has its own office buildings and factories. There is an acoustic laboratory that meets the CNAS standards in the factory, which can monitor the acoustic technical indicators of its own products and provide external acoustic testing services.Through the hard work, continuous innovation and development of the Danpin team, the acoustic laboratories designed, produced and installed by it have products with accurate technical indicators, green environmental protection, durable quality, beautiful appearance and high - tech content.

The semi - anechoic chamber is not only a special laboratory for acoustic testing, but also an important part of the testing system. In fact, it is also one of the acoustic testing equipment, and its acoustic performance indicators directly affect the accuracy of testing.For specific acoustic design, manufacturing, construction, installation and on - site actual measurement acceptance and other follow - up materials, please pay attention to browsing the engineering cases on the official website of our company. Or scan the QR code of the WeChat public service account of our firm for free push. For detailed materials, please go to the download center on the official website of our company for free download.

Keywords: anechoic chamber, dead room, silent room, reverberation room, semi - anechoic chamber, semi - dead room, full - anechoic chamber, full - dead room, acoustic measuring instrument, vibration measuring instrument.

I. Procurement Content

(1) Semi - anechoic chamber;

(2) NI - DC PULSE four - channel noise and vibration analysis system.

II. Basis Standards

(1) GB/T 6882 "Acoustics - Determination of Sound Power Levels of Noise Sources - Precision Methods for Anechoic and Hemi - anechoic Rooms"

(2) ISO 3745 "Acoustics - Determination of Sound Power Levels of Noise Sources - Precision Methods for Anechoic and Hemi - anechoic Rooms"

III. Main Indicators and Project Contents

1. The installation project construction plan and materials used for the semi - anechoic chamber shall all be designed and installed by Party B.

2. The effective net size, cut - off frequency and free field radius inside the semi - anechoic chamber installation project shall be implemented in accordance with the contract agreed upon by both parties.

3. Meet the indoor acoustic technical indicators, dimensions and other relevant details agreed upon by both parties.

IV. Metrological Acceptance

V. Completion Photos

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