Which company should I go to for noise resistance testing? Baijian.com is a comprehensive collective owned research institute that integrates testing, inspection, analysis, testing, technical consulting, and other services with CMA and other qualifications recognized by the national metrology certification. It is also rated as a national high-tech enterprise and can issue testing reports within 7-15 working days Testing items include noise resistance performance testing, etc Testing Standard

GOST 21704-1976 Terminology and definitions of noise resistant electroacoustic equipment for telephone systems

SJ 20045/1-1998 ODK-1 detailed specification for noise resistant transmitters

SJ 20125-1992 General specification for head mounted noise resistant transmitters, receivers, and earmuffs

YD/T 2019.3-2017 Test methods for broadband customer network equipment based on public telecommunications networks Part 3: Wired networking equipment with general media

1. BAIJIAN receives a commission from the customer 2. Both parties confirm the service requirements 3. Engineers provide quotations 4. The customer sends samples in the early stage, and BAIJIAN receives the samples 5. Engineers number and organize the samples 6. Both parties shall determine the testing items and sign a confidentiality agreement 7. Assign personnel to the laboratory, establish a team, and arrange testing projects. Having the national high-tech enterprise certificate and CMA testing qualification certificate, with complete testing instruments, the testing report can be issued within 7-15 days Complete the experiment within 8-15 working days 9. The engineer integrates the test results and data, and issues a testing report 10. Send the report to the customer by mail, fax, email, etc 11. Engineers provide follow-up related services