For new materials companies, passing supplier audits by major clients like Huawei, CATL, and BYD is the first step to entering high-end supply chains. Many companies think that 'having the equipment is enough,' but the reason for failing an audit usually isn't about equipment availability—it’s about how standardized the systems are.  

In the lab stage, big client audit teams focus on these key points: whether the equipment setup covers all mandatory tests. Auditors check each lab’s testing capabilities item by item against product standards (national or client-specific standards)—if there’s a standard but no matching equipment, it’s immediately marked as 'insufficient testing capability.' Whether equipment has valid calibration certificates. Calibration certificates for DSC, TGA, and universal testing machines must be within the valid period (usually 12 months). High-end equipment without calibration is treated the same as no equipment during audits. Whether SOPs are standardized and executable. Every piece of equipment must have a written standard operating procedure, and operators should be able to demonstrate and answer questions on site—relying on 'experience' is a high-risk item in audits.  

Data traceability and audit tracking have been key focuses in recent years. Can the original data be traced? Are modifications audit-tracked? Excel spreadsheets casually edited with no records are a serious non-compliance issue in audits. At a minimum, it’s recommended to: automatically collect instrument data, store original data as read-only, and have an audit-trail system for modifications. Lab environment control—temperature and humidity records, equipment usage logs, sample retention management—these 'software' level norms are often where domestic companies lag most behind international standards.  

Dehui Scientific Instruments (www.dehuisci.com) not only supplies equipment but also helps companies establish a standardized testing system that can withstand major client audits. Phone: 0512-67071902.