ES3004 Testing Report

Attenuation measurements have been performed according to the European Standards EN3522:2020 on the Jiangyin Sian SA-1-3 triple flange earplugs (test ID Q8102A). The specifiedthreshold measurement data were obtained using sixteen normally-hearing listeners. These

listeners were selected as specified in EN352-2:2020.

The measurements were made in a room designed for this purpose. All acoustic characteristicsof the room meet the requirements outlined in EN352-2:2020. The ambient noise levels in thisroom are below the limits specified in EN352-2:2020, and open ear thresholds are used on acontinuing basis to monitor the background noise levels. An automatic recording attenuator wasused to record both open and occluded ear thresholds.

Each of the sixteen subjects was tested at each of seven test frequencies. The attached Tablesshow mean and standard deviation attenuation values in decibels (dB) for cach test signal. Theresults presented in this report pertain to the samples tested only.

Michael & Associates is accredited by the National Institute of Standards and Technology(NIST) National Laboratory Accreditation Program (NVLAP) for tests performed according toAS/NZ S1270:2002,ANSI S3.19-1974,ANSI S12.6-2016,ANSI S12.42-2010 and EN352 parts1-10. These accreditation criteria encompass the requirements of international standard ISO17025. This report may only be reproduced or transmitted electronically in its entirety. Thisreport shall not be used to claim product certification, approval or endorsement by NVLAP or byany agency of the U.S. Government. Accreditation documentation can be viewed at www.michaelassociates.com/data/documents/NVLAP-2022.pdf.