Explore our flagship, academic-backed OEM road maintenance equipment designed for maximum uptime and precise fluid application.
Founded in 1998 by a distinguished coalition of professors from Chang'an University—China's premier university for highway engineering and transportation machinery—HEM Group (originally Xi'an Hongda Communications Technology Co., Ltd.) represents the vanguard of independent research, design, and manufacturing in road construction machinery.
Over the past 25+ years, our engineering philosophy has bridged high-level theoretical mechanical dynamics with rugged job site reality. Recognizing the expanding global demand for precision road maintenance equipment, we launched HME TOP Machinery Equipment Co., Ltd. in 2017 to handle global technical exchanges, export logistics, custom OEM manufacturing, and round-the-clock field engineering support.
In modern asphalt pavement engineering, the bond strength between structural lifts relies directly on the uniform application of emulsified asphalt (tack coat). Bitumen emulsion hand sprayers serve a critical role where large-scale intelligent bitumen distributors cannot operate efficiently—such as urban curb lines, manhole peripheries, bridge deck joints, localized pothole patches, and trench repairs. Operating at low-to-medium pressure, a hand sprayer must maintain a consistent emulsion fluid viscosity without causing phase separation (breaking of the emulsion) or pump cavitation inside the delivery lines.
How modern bitumen emulsion hand sprayers are shifting from crude manual spray rigs to digital, eco-friendly, non-clogging engineering systems.
Traditional hand sprayers frequently suffer from bitumen coagulation within the pump housing and spray lance during idling. Our engineered hand sprayers incorporate a 3-way valve bypass loop that maintains continuous fluid agitation, preventing cold asphalt deposits from clogging the nozzles.
Equipped with ultra-reliable 4-stroke gasoline or diesel power plants calibrated for optimum torque at low RPMs. Built-in heating jackets utilize exhaust enthalpy or auxiliary burner rings to maintain target emulsion application temperatures (typically 50°C - 70°C).
Features lightweight, thermal-insulated alloy wands equipped with fan-type atomizing nozzles. Engineered to deliver uniform transverse spray coverage from 0.2 kg/m² to 1.5 kg/m² with zero overlap streaking or missed spots.
Unlocking complete supply chain integration, rigorous quality assurance, custom branding, and unbeatable cost-performance ratios.
Whether you require specific pump flow rates (e.g., 20 L/min to 60 L/min), custom frame dimensions for pick-up truck mounting, or color-matched powder coatings, our in-house engineering team converts CAD blueprints into production prototypes within 15 days.
Every hand sprayer unit undergoes 100% factory hydrostatic pressure tests, engine load validation, and spray pattern consistency verification using real asphalt emulsion formulations before export clearance.
Supported by dedicated export logistics teams handling sea, rail, and air freight. We stock fast-wear components (seals, hoses, spray tips, pump impellers) guaranteed at low factory direct pricing to minimize client job-site downtime.
Delivering robust highway infrastructure solutions across 60+ countries worldwide.
HEM Group focuses heavily on high-end road maintenance machinery, securing numerous invention patents in mechanical dynamics, engine power matching, hydraulic transmission, and digital electronic control systems. Recognized as a official "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology in 2006.
Our complete machinery lineup spans road milling machines, asphalt distributors, pavers, chip sealers, slurry seal pavers, road wideners, mobile crushers, jaw crushers, screening plants, road rollers, excavators, and backhoe loaders.
Deploying bitminous emulsion hand sprayers and heavy equipment suites across diverse municipal, rural, and heavy industrial job sites.
Supplying robust wheel loaders, excavators, backhoe loaders, and graders for earthworks in road bed preparation, tunnel excavation, bridge approaches, industrial parks, and agricultural revitalization projects across thousands of global sites.
Integrated solutions combining Asphalt Mixing Plants, Asphalt Pavers, Intelligent Bitumen Distributors, Chip Sealers, and Hand Sprayers. Essential for tack coat bonding between old concrete pavements and new hot-mix asphalt overlays.
Deploying mobile jaw crushers, primary screens, and roller crushers to process raw stone aggregate. Provides exact gradation materials required for micro-surfacing, slurry seal coats, and high-performance asphalt mixes.
Exported to over 60 countries across Asia, Africa, Latin America, Europe, and the Middle East.
Technical solutions for road contractors, procurement officers, and machinery distributors.
Explore related excavators, backhoe loaders, walking spiders, bulldozers, and asphalt plants from our Chinese factory network.
HME Machinery
