Quality Control

KELONG NEW MATERIALSQuality Certification

Standard: IRIS

Number: 2022/101463

Issue Date: 2022-08-21

Expiry Date: 2025-08-20

Standard: ISO 9001

Number: 00821Q30310R2M

Issue Date: 2021-12-30

Expiry Date: 2025-05-11

KELONG NEW MATERIALSQC Profile

Our products are subjected to strict quality control, and all of our products from raw materials to finished products are subjected to stringent experimental tests. Our technical center has a perfect testing system and inspection system, our rubber material testing items include:

Physical Indicators

Volatile matter, ash, Menni viscosity, vulcanization curve, Menni burning time, etc.

Mechanical Properties

Hardness, tensile properties, tearing properties, compression properties, impact properties, friction properties, fatigue resistance, peel strength, adhesive strength, etc.

Thermal Properties

Vertical combustion, horizontal combustion, smoke density, ultimate oxygen index, flame spread rate, thermal stability, etc.

Electrical Properties

Surface resistance, surface resistivity, volume resistance, volume resistivity, breakdown voltage, dielectric strength, dielectric loss, anti-static properties, etc.

Weathering Test

Aging test (UV, xenon lamp, carbon arc lamp, ozone), liquid resistance test, thermal shock, etc.

Chemical analysis

Composition analysis, heavy metal testing, ROHS, rubber identification, etc.

After the completion of all the products, they will be inspected by our professional quality inspectors for the second time, and at the same time, they will be tested according to the customer's requirements.