Product Inspection
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Testing Laboratory Overview
The Quality Management Department (QMD) of ChangSheng Crabon was initially established in 2016 and officially commenced its testing operations in
June 2022, following the resumption of production at Zhong'anxin. The department specializes in providing comprehensive testing services for raw materials, in-process intermediates, and finished polyacrylonitrile-based carbon fiber products.
Quality Commitment
CNAS L20630 Laboratory Accreditation Certificate

CNAS accreditation (China National Accreditation Service for Conformity Assessment) represents a formal recognition of the technical competence of
laboratories, inspection bodies, and other institutions. Its core functions are to standardize technical service quality and enhance credibility, which are
specifically demonstrated in the following aspects:
Standardizing Internal Management
The accreditation process requires organizations to establish a robust quality management system, which helps improve the standardization of internal
processes, the accuracy and traceability of data, and reduces human error and management gaps.
Meeting Regulatory or Industry Requirements
CNAS accreditation is often a mandatory requirement in certain regulated industries (such as food, pharmaceuticals, and environmental protection) or
for project tenders, ensuring that technical services meet statutory or industry standards.
The Quality Management Department of ChangSheng has obtained ISO/IEC 17025 accreditation (for specific test items). All testing activities comply
with national standards. Through participation in proficiency testing, inter-laboratory comparisons, and other activities, the department's stable and precise testing capabilities have earned high recognition from its clients.
Key Competencies
The Quality Management Department (QMD) of ChangSheng Crabon has established and operates its laboratory management system in accordance
with the ISO/IEC 17025 standard. It is supported by a professional and highly skilled testing team of over 50 members, providing crucial support for
product development and quality assurance.
The testing center possesses specialized and comprehensive capabilities for evaluating carbon fiber properties, equipped with more than 100 advanced
instruments. Key equipment includes a Differential Scanning Calorimeter (DSC 214), Gel Permeation Chromatograph (e2695), Atomic Absorption
Spectrometer (ZEEnit 700P), Simultaneous Thermal Analyzer (STA 449 F5), Gas Chromatograph (7890B), Elemental Analyzer (Vario EL cube), Scanning
Electron Microscope (JSM-6510A), Energy Dispersive Spectrometer (EX-36260D5A), Density Gradient Column (DGA1), and Universal Testing Machine (5965).
Carbon Fiber Testing

