Is the noise data of the product tested by the soundproof box accurate?

The sound insulation box (noise test box) absorbs sound in the sound insulation space, making it a small silent space, in which some small products, such as motors, stereos, transformers, ballasts, etc., can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. Therefore, this equipment is more precise and accurate, and the measured data is more accurate. The soundproof box (noise test box) is sound-absorbing in the soundproof space, making it a small silent space. In this space, some small products, such as motors, stereos, transformers, ballasts, etc. , can be tested. So this equipment is more precise and accurate, and the measured data is also more accurate.