China Testing & Certification International Group Co., Ltd. (CTC, Stock Code 603060) originated from the testing and certification business of China Building Materials Academy in the 1950s. After 70 years of unremitting efforts and persistent pursuit, the company has formed five business categories: detection and testing, certification and evaluation, testing instruments and intelligent manufacturing, measurement and calibration, scientific research and technical services, committed to providing customers with technical services and comprehensive solutions of detection and testing, certification and evaluation, appraisal, consultation, training, and instruments and equipment in fields of quality, environmental protection, green, safety, health, and energy conservation.

A Vacuum Insulation Panel (VIP) is a high-efficiency thermal insulation material made by combining a core material with a vacuum-tight envelope using high vacuum technology. The core principle is to block air convection and conduction through the vacuum environment, while the microporous structure of the core material suppresses thermal radiation, achieving an extremely low thermal conductivity (0.002–0.004 W/(m·K)) – approximately one-tenth that of traditional polyurethane foam. VIPs are currently widely used in home appliances, construction, cold chain logistics, and emerging fields.
Granular Core VIP
Foam Core VIP
Fibrous Core VIP
Composite Core VIP
VIPs for Building Applications (Class B)
VIPs for Industrial Applications (Class I)
Type I VIP
Type II VIP
Type III VIP
Type IV VIP
Appearance
Puncture Resistance (Force to puncture / Probe force)
Thickness Change Rate after Puncture
Thermal Conductivity after Puncture
Dimensional Stability
Dimensions (Length/Width/Thickness)
Warpage and Diagonal Difference (Flatness)
Area Density / Mass per Unit Area Deviation
Resistance to Damp Heat Aging (Humidity and heat aging / Durability)
Tensile Strength Perpendicular to Faces
Thermal Conductivity in the Center Region (Initial performance)
Compressive Strength
Surface Water Absorption (Water pickup after specified time)
Expansion Rate (Swelling) Perpendicular to Faces after Puncture
Long-term Durability / Aging (Aging at elevated temperature)
Reaction to Fire / Fire Performance
Vacuum Insulation Panels (VIP): GB/T 37608-2019
Vacuum Insulation Panels for Building Applications: JG/T 438-2014
The company hosts the National Center for Quality Inspection and Testing of Glass Fiber Products, holding national-level CMA qualification and CNAS laboratory accreditation.
As the lead drafter, the company has formulated or revised over 30 national and industry standards in the field of thermal insulation materials.
Specializing in testing in the thermal insulation and fiber fields for over 60 years.
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