As a collectively owned research and testing institution, Baijian.com can conduct airtightness testing and issue testing reports. The testing cycle is short, and a testing report can generally be issued within 7-15 days. Low testing cost, scientific and reliable data, fair and rigorous, integrating testing, inspection, analysis, testing, technical consulting and other services, can conduct closed 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 Detection scope: Pipelines, valves, containers, automotive components, air conditioning components, doors and windows, etc Testing items: Sealing, airtightness, water tightness, airtightness, etc Testing standards: DB37/T 4287-2020 Code for on-site testing of air leakage in civil air defense engineering protective equipment - Protective closed doors and closed doors. GB/T 28764-2012 Packaging container airtightness testing method - Ultrasonic method. YY/T 0646-2015 Small steam sterilizer automatic control type. Biological safety performance requirements for steam sterilizers in YY 1277-2016