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As a creative and agile Iranian holding in the bitumen industry, DEJPA is among the first three producers in Iran with an export market, focusing on the field of bitumen and mulch. It is also known as a leading company in the field of technical and engineering services in the oil refining, bitumen and mulch industry, and it has made successful entries in the field of oil refining as business opportunities for the coming years.
Taking the lead in gaining market share in the current chain through increasing productivity, intelligence and innovation in supply, production and sales methods, as well as entering the oil refining chain in order to learn and build strategic capacity for the future of business.
43 YEARS OF COUNTINUES ACTIVITY IN BITUMEN PRODUCTION.
 
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What Is Cutback Bitumen? Differences Between RC, MC, and SC Grades and Their Applications

What Is Cutback Bitumen? Differences Between RC, MC, and SC Grades and Their Applications


Cutback bitumen is produced by blending base bitumen with a petroleum solvent to temporarily reduce viscosity. Based on the solvent evaporation and curing rate, it is classified as rapid-curing RC, medium-curing MC, or slow-curing SC. This article explains the differences, applications, benefits, limitations, safety considerations, quality-control tests, and comparison with bitumen emulsion.
June 22 2026 More
What Is Bitumen Emulsion? Cationic and Anionic Types, Applications, and Difference from Cutback Bitumen

What Is Bitumen Emulsion? Cationic and Anionic Types, Applications, and Difference from Cutback Bitumen

Bitumen emulsion is a stable dispersion of fine bitumen droplets in water, produced with an emulsifying agent. It is widely used in road construction, pavement maintenance, tack coats, surface treatments, slurry seals, microsurfacing, and selected cold mixtures. This article explains cationic and anionic emulsions, rapid-, medium-, and slow-setting grades, applications, benefits, limitations, pricing factors, and the difference between bitumen emulsion and cutback bitumen.
June 20 2026 More
What Is Polymer Modified Bitumen? Applications, Benefits, and Difference from Conventional Bitumen

What Is Polymer Modified Bitumen? Applications, Benefits, and Difference from Conventional Bitumen

Polymer Modified Bitumen, also known as PMB, is a modified asphalt binder produced by adding polymers to base bitumen. It is used to improve asphalt performance against rutting, cracking, temperature variations, and heavy traffic loads. This article explains PMB applications, benefits, differences from conventional bitumen, and key pricing factors.
June 17 2026 More