Quality is the foundation of our enterprise. We engineer our products for enduring performance, ensuring their longevity aligns precisely with their intended application. Every CONTUBE product is designed and manufactured to meet—or exceed—relevant international and industry-specific standards, with safety, aesthetics, reliability, and service life serving as the definitive benchmarks of our offering.


EN13245ISO9001 CertificateSGS Test Reprot

EN 13245-2:2008

ISO 9001:2015

SGS Test Report


Our commitment to quality is embedded in every stage of production. We source raw materials accompanied by full mill certifications and further validate their integrity through independent laboratory testing to guarantee compliance with stringent specifications. Supported by a dedicated team of engineers and quality managers, we maintain a proactive QA/QC audit program that drives continuous improvement across our facilities, systematically reducing variances and ensuring consistent excellence in every product we deliver.


Elastic Modulus Test

Static Bending Strength Test

Nail-holding Capacity Test

Elastic Modulus Test


Static Bending Strength Test


Nail-holding Capacity Test


Elastic Modulus Test

Washing Durability Test

Abrasion Resistance Test

Vicat Softening Point Test


Washing Durability Test


Abrasion Resistance Test


Surface Hardness Test

Simply Supported Beam Impact Test

UV Aging Test

Surface Hardness Test


Simply Supported Beam Impact Test


UV Aging Test



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