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its production is characterized by

Posted by hhm1020 
its production is characterized by
March 06, 2018 06:40PM
<p>whether the authority of the test report. At present, the most authoritative wall soundproof test report units include Tsinghua University and Tongji University Institute of Building Acoustics. Many manufacturers in the market are promoting their own performance noise board is good, but there is no way to provide authoritative test report to confirm. Nanjing Zhi-green noise insulation panels and noise </p>
<p>coatings, all at Tsinghua University and Tongji University for testing, issued an official test report, indicating the composition of the noise insulation wall sound insulation effect. If a soundproof board to promote their sound performance is good, but it can not provide a formal test report, consumers must be worried. Second, we must pay attention to manufacturers selling noise board and testing samples </p>
<p>submitted for testing is the same product. If the samples to be inspected are thickened, exaggerated, made of different materials or treated specifically, and the actual sample being sold is a different product then it is clear that the product being sold will not reach the noise level indicated in the test report. In this regard, consumers should pay attention to identify the manufacturer's qualifications, credit and </p>
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