Direct factory OEM manufacturing solutions tailored for heavy-duty paving, asphalt transportation, aggregate spreading, and precise bitumen emulsion distribution.
Founded in 1998 by a distinguished consortium of professors from Chang'an University—the premier global institution for highway engineering—HEM Group (originally Xi'an Hongda Communications Technology Co., Ltd.) stands as China's pioneer in independent road maintenance technology.
Over the past 25+ years, our research trajectory has redefined high-end pavement preservation machinery. Recognized as an official "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology in 2006, our engineering teams hold milestone patents in mechanical dynamics, engine matching optimization, closed-loop hydraulic transmissions, and digital micro-meter electronic control systems.
In 2017, we launched our specialized global export division, HME TOP Machinery Equipment Co., Ltd., guaranteeing direct access to OEM customized machinery, international technical transfer, and dedicated lifecycle technical support.
Understanding the macro-economic paradigm shift from reactive road reconstruction to proactive structural preventive maintenance.
As global municipal transport budgets tighten, road authorities are abandoning complete asphalt overlay replacements. A Seal Cape treatment—combining a synchronized chip seal layer sealed with an ultra-thin polymer-modified slurry seal or micro-surfacing—restores skid resistance and seals micro-cracks at less than 35% of traditional asphalt mill-and-fill costs.
Preventative application of a Seal Cape system when a road's Pavement Condition Index (PCI) drops between 60 and 80 extends structural service life by 7 to 10 additional years. This prevents moisture ingress—the primary catalyst for base-course failure and catastrophic pothole formation.
Compared to hot-mix asphalt (HMA) production requiring temperatures over 160°C, cold emulsion Seal Cape applications drastically reduce greenhouse gas emissions. OEM mobile micro-surfacing units operate at ambient temperatures, reducing project carbon intensity by up to 45%.
Integrating digital dual-control emulsion spraying with adaptive aggregate metering systems for zero-defect pavement application.
| Performance Metrics | Single/Double Chip Seal | Standard Slurry Seal | HEM Group Integrated Seal Cape |
|---|---|---|---|
| Crack Sealing Capability | Moderate (Fills surface voids) | High (Fills fine hairline cracks) | Maximum (Dual-layer structural lock) |
| Aggregate Retention & Flying Stones | Risk of loose chips | Zero loose chips | Zero (Chips fully encapsulated by micro-surfacing) |
| Surface Friction / Skid Resistance | High initially, prone to bleeding | Moderate wear resistance | Superior long-term macro-texture |
| Life Expectancy Extension | 3 - 5 Years | 4 - 6 Years | 8 - 12 Years |
| Hydraulic Flow Precision | Manual valve pulse | Standard pump control | Closed-loop CAN-bus computer synchronization |
Integration of radar speed matching and pneumatic nozzle arrays. Ensures asphalt emulsion spread rate variance stays under ±1.0% regardless of truck speed fluctuations.
Customized shear mills within our OEM asphalt emulsification plants allow up to 15% SBR/SBS polymer modification, increasing binder elasticity under heavy axle loading.
Next-gen equipment equipped with IoT diagnostic modules monitoring real-time slurry mix viscosity, ambient moisture, aggregate gate openings, and tank thermal levels.
Tailor-engineered machinery configured to meet harsh climatic conditions and extreme operational environments around the globe.
Region Focus: Central Asia, Alpine Arterials, Eastern Europe.
Technical Challenge: Extreme temperature deltas cause rapid micro-fracturing and water penetration, leading to frost heaves.
HEM Solution: Dual-synchronized chip sealing combined with polymer-modified bitumen emulsion. The rubberized binder maintains flexibility down to -30°C while sealing sub-base voids.
Region Focus: Southeast Asia, West & Central Africa.
Technical Challenge: Intense moisture strips bitumen from stone aggregates, causing rapid stripping and surface disintegration.
HEM Solution: Rapid-setting emulsifier formulations applied via integrated slurry seal spreaders equipped with chemical breaking control additives for quick curing within 45 minutes.
Region Focus: Australia, South America, Sub-Saharan Mining Hubs.
Technical Challenge: Extreme tire loads (over 100-ton vehicle GCW) lead to severe rutting and aggregate crushing.
HEM Solution: Heavy-duty, high-cube aggregate chip spreaders paired with modified asphalt plants for high-viscosity gap-graded aggregate matrix applications.
HEM Group provides a comprehensive one-stop machinery suite ranging from asphalt mixing plants to crushing and water restoration systems.
Uncompromising OEM quality, complete customs & logistics support, and local regional technical hubs.
Independent research base specializing in mechanical dynamics, engine power matching, hydraulic drives, and advanced electronic controls.
We provide full technical support for road paving engineering, bitumen emulsion chemistry, aggregate gradings, and site management.
Custom machine chassis engineering, specialized hopper volume adjustments, spray bar configurations, and custom climate insulation packages.
Continuous online technical support, video diagnostics, rapid spare-parts dispatches, and on-site operator commissioning.
Established regional distribution & service teams across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka.
Machines successfully operating in India, Sri Lanka, Indonesia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, etc.
Expert answers to common engineering, procurement, and field deployment queries.
Explore our expanded machinery portfolio, including mobile crushing plants, road wideners, bitumen tankers, and synchronized sealing equipment.
HME Machinery