Certificates
Certified Quality, Recognised Reputation
Management certifications, laboratory test reports and industry honours collected by our plant. Click any certificate to view it full size.
Honours
Certificates & Test Reports
All documents are held by Henan Qinghe Industrial Co., Ltd. and are available in copy on request for tender and customs use.
Testing
What Our Laboratory Verifies
An independent in-house testing laboratory backs up every certificate with routine batch inspection.
Alloy composition — spectrometer analysis of every melt
Dimension and wall thickness — micrometer and profile projector
Coating thickness — eddy current and magnetic gauges
Adhesion — cross-cut and boiling water tests
Mechanical properties — tensile, yield and Webster hardness
Thermal break strips — shear and tensile pull-out testing
Weathering — salt spray and accelerated ageing
Packing — film wrap, kraft paper, foam and wooden crate check