Building and Sanitary Ceramics Testing

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Sintered Stone Testing

Sintered stone slabs (rock slabs) are a new type of porcelain material made from natural raw materials through special pressing processes and high-temperature firing. They feature large dimensions, high hardness, high temperature resistance, excellent scratch and wear resistance, impermeability, acid and alkali resistance, zero formaldehyde, and environmental friendliness. These characteristics make them widely applicable in various fields such as home furnishing, kitchens, and bathrooms. Sintered stone slabs have evolved from "countertop" applications to "curtain walls + integrated home furnishings." In 2025, the domestic consumption of sintered stone slabs for curtain walls exceeded 15 million square meters, with local production capacity in Shaanxi accounting for 65% of Northwest China.

The company has established the largest building ceramic testing center in Northwest China, covering an area of 3,000 m². It holds comprehensive qualifications for GB/T 4100-2015, ISO 13006, EN 14411, and other standards, issuing over 4,000 ceramic tile test reports annually. The National Center for Quality Inspection and Testing of Building and Sanitary Ceramics provides enterprises with customized testing services, one-stop inspection, certification, and technical guidance.

Testing Products

Sintered Stone Slabs (Rock Slabs)

Large-Format Ceramic Boards

Ceramic Boards

Testing Items

Surface quality

Dimensional tolerance (dimensional deviation)

Water absorption

Breaking strength

Modulus of rupture

Shear strength

Freeze-thaw resistance

Chemical resistance (acid and alkali resistance)

Stain resistance

Coefficient of static friction (dry condition)

Radionuclide limits

Impact resistance

Machinability (workability)

Release of lead and cadmium

Abrasion resistance (surface abrasion / deep abrasion)

Fracture toughness

Modulus of elasticity (elastic modulus)

Testing Standards

Sintered Stone Slabs (Rock Slabs) for countertops, home decoration, wall and floor applications:

T/CBMCA 015-2020, GB/T 44309, T/CBCSA 40-2021

Large-Format Ceramic Boards (glazed and unglazed):

GB/T 39156

Ceramic Boards (porcelain, stoneware, earthenware):

GB/T 23266

Service Advantages

Designated CCC certification testing institution by the Certification and Accreditation Administration of China (CNCA).

The company has a 3,000 m² specialized ceramic tile laboratory with full qualifications for GB/T 4100-2015 and export testing capabilities for CE and SASO.

Provides "testing + certification" packaged services for Carbon Footprint, Environmental Product Declaration (EPD), and three-star Green Building Materials certification.

A comprehensive third-party testing service institution offering product testing, turnkey laboratory construction, conference services, technical services, and sales of reference materials and consumables.

Leveraging CTC Group's over 700 national/industry standards and more than 1,800 patents, the company can customize internal enterprise standards and process improvement plans for clients.

All reports are synchronously verifiable on the "Official WeChat Public Platform"; clients can scan a QR code with their mobile phone to check report authenticity.