Gypsum Board Testing

CTC provides comprehensive testing and certification services in the gypsum board field, covering various types including paper-faced gypsum boards, paperless gypsum boards, hollow gypsum partition boards, and decorative PVC gypsum boards. Testing items include chemical composition (elemental sulfur, sulfide, sulfite, sulfate, calcium oxide), basic physical properties (surface density, breaking load, impact resistance, bond strength between facing paper and core, dimensional deviation, hardness, etc.), special performance indicators (fire resistance rating, flame retardant rating, fire stability under direct flame, water absorption rate), as well as environmental safety indicators (formaldehyde emission, heavy metal content, radionuclide limits).

Testing Products

Gypsum Boards

Testing Items

Sulfite

Sulfide

Elemental Sulfur

Sulfate

Soluble Anhydrous Calcium Sulfate

Calcium Sulfate Hemihydrate

Calcium Sulfate Dihydrate

Testing Standards

Gypsum Boards:

Paper-faced gypsum boards, paperless gypsum boards — GB/T 37219-2019, T/CBMF 67-2019

Service Advantages

Extensive experience in the testing of gypsum boards and other gypsum products. The company has applied for multiple invention patents and has developed several national and group standards in this field.

Led the testing efforts during the "U.S.-China Gypsum Board Incident," facilitating international recognition of Chinese gypsum board products and resolving a major trade dispute.


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