Rubber Engineering & Development Lab

Strong R & D
R&D in Doshin has always been one of our top priorities. Our R&D capabilities have always been the backbone of Doshin’s robust competitiveness, propelling us to our current position of strength with the industry.

Doshin is continually following research findings in material development, design of new and novel anti-seismic component, and new methods of manufacture for optimising the properties of the component enabling it to offer wide technical support for it’s after sale service.

The important of an advanced design
Thanks to collaboration with leading consulting engineering firms specialised in the design of structures with novel ant seismic components. Doshin is able to provide solutions tailored to all types of civil and industrial structures, from transportation infrastructure (bridges, viaducts) to ordinary buildings, strategic structures (such as hospitals and emergency centers) and industrial facilities.

Doshin mother company, Kossan laboratory, is accredited to ISO/IEC 17025:2005 under the Laboratory Accreditation Scheme Malaysia (SAMM No 464) administered by Standards Malaysia. The accreditation and our on-going new method development and scope expansion further enhance, upgrade and establish our technical capabilities to provide fast and reliable results to our customers.

The laboratory is essential for the following operations:

  • Research and Development material testing
  • Gage calibration and measurement system analysis activity (MSA)

Among some of our in-house testing equipments include:

  • Lab Internal Mixers
  • Rheometers
  • Mooney Viscometer
  • Carbon Black Dispergrader
  • Densimeter
  • Hardness Gauges
  • Sample Preparation Machines
  • Dimensional Measurement facilities
  • Rubber Physical & Mechanical Testing facilities
  • Multi-purpose Master Calibration Devices


  • Tensile Properties Test
  • Hardness Test (ASTM Shore A, JIS Shore A, IRHD)
  • Hot Air Heat Aging Test (up to 300ºC)
  • Compression Set Test
  • Ozone Resistance Test (up to 400 pphm)
  • Moisture Content Test (Chemicals, Fillers & Compounded Rubbers)
  • Quadruple Shear Test
  • Imaging Analysis (For dirt particles/contamination detection)
  • ISO/DIN Abrasion Resistance Test
  • Low Temperature Brittleness Test (up to -70ºC)
  • Density/SG Test
  • Rheology Test
  • Tear Resistance Test (Trouser and Crescent)
  • Flame Retardant Test
  • Fluid/Oil Immersion Test
  • Rebound Resilience Test


  • Static Compression/Load Deflection test (up to 100kN capacity)
  • Dynamic Spring Rate Test
  • Durability/Endurance/Life Test
  • Adhesion/Bond Failure Test

Abrasion Tester

Fatique Tester

Cutter Machine

Tensile Machine

Low Temperature Brittleness

Hardness Testing


Ozone Chamber

5L kneader

5L Kneader

Bonding Test

Double Shear Testing


Rotorless Rheometer 

Mooney Viscometer

Mooney Viscometer



Rubber Engineering & Development Center

Rubber Engineering & Development Mixing Laboratory


Material Testing & Analysis Lab

Doshin Rubber Products (M) Sdn. Bhd.

198401001871 (114386-H)

Lot PT 34252, Jalan Sekolah
Rantau Panjang, 42100 Klang
Selangor Darul Ehsan, Malaysia.

603-3290 5619 / 603-3290 5621


E-Lab Testing & Research Center