Industrial grade, German automation molded PVC, UPVC, PPR, and POM components.
Ehao Plastic Group is a high-tech private enterprise integrating R&D and production of building materials, high-performance pipe fittings, and custom injection moulds. As an established leader of PVC/UPVC ball valves in the domestic Chinese market, we have set industrial standards for reliability and durability. Since our inception, our technological progress has been supported and accelerated by the Chinese Academy of Sciences and Zhejiang University, forging a solid bridge between advanced academic polymer research and industrial scale-up.
To ensure unparalleled consistency in our polymer matrices, we introduced elite automated production lines and computer-controlled automatic injection molding systems directly from Germany. Every single valve and fitting undergoes a thorough 26-step scientific testing routine controlled under strict QA protocols, guaranteeing a 100% ex-factory pass rate. Our products fully comply with stringent international standards including DIN 8077 and DIN 8078, delivering world-class performance across diverse engineering applications.
Testing Steps
Ex-Factory Pass Rate
Countries Supplied
8077/8078 Certified
For high-pressure fluid installations, conventional injection molding can introduce internal stresses and structural weaknesses at the weld lines. Ehao Plastic Group addresses this by employing advanced Injection Compression Molding (ICM) principles for heavy-duty components. This process merges standard injection with a subsequent mechanical compression phase in the cavity. By utilizing partial clamping and final compression stroke, we significantly reduce polymer orientation and residual stress, yielding structural density properties superior to standard injection systems.
| Parameter | Conventional Injection Molding | Compression-Assisted Molding | Engineering Benefit |
|---|---|---|---|
| Residual Stress Profile | High (Localized near gate) | Extremely Low & Uniform | Prevents stress-cracking under high fluid pressures. |
| Clamping Force Requirement | Nominal (100%) | Reduced (Up to 50% during fill) | Reduces tool wear, enabling tight dimensional tolerance over time. |
| Weld Line Strength | Moderate (Risk of mechanical shear) | Homogeneous Material Fusion | Guarantees integrity under thermal expansion cycle. |
| Density & Wall Thickness Control | Prone to sink marks in thick parts | Compensated by compression phase | Allows thick-walled valves to retain zero porosity. |
Our raw material selections feature stabilized PVC, UPVC, PP, PPR, and health-grade POM. Through polymer compounding with heat stabilizers and impact modifiers, our raw material matrices maintain optimal viscosity during injection compression. This guarantees precise compliance with the molecular properties required by standard DIN 8078.
Our polymer valves and fittings are customized for specific engineering challenges across key industrial and civil infrastructure sectors:
Safe potable water distribution demands toxicologically inert polymers. Our POM and PPR systems prevent scale build-up and block microbial proliferation, guaranteeing clean water in compliance with international drinking water safety certifications.
Outdoor agricultural networks face constant UV degradation and fluctuating pressures. Ehao's customized UPVC and PVC valves feature integrated UV stabilizers and impact-resistant formulations to prevent brittleness under intense solar exposure.
Aquatic ecosystems require stable flow rates and zero chemical leaching. Our non-toxic plastic ball valves resist seawater corrosion and biological fouling, sustaining oxygenation and filtration cycles without introducing heavy metals or synthetic plasticizers.
Located in China's advanced industrial core, Ehao Plastic Group utilizes a highly integrated supply chain ecosystem. From local procurement of premium resin compounds to rapid prototyping, mold manufacturing, and precision automation, our complete internal integration optimizes lead times and minimizes costs.
Unlike factories relying on third-party mold houses, Ehao runs an in-house tool shop equipped to produce customized plastic extrusion and injection-compression molds. This setup allows us to rapidly prototype, test, and adjust tools to client specifications. Working in close collaboration with the engineering faculties of Zhejiang University, we design molds with optimal runner layouts, uniform heating configurations, and rapid cooling vents to maximize production efficiency.
Ehao is committed to driving the next generation of plastic fluid engineering. Our R&D roadmap focuses on three main developments:
Developing ball valves with integrated pressure, temperature, and leak detection sensors inside the molded bodies to enable predictive maintenance in industrial operations.
Testing bio-derived and recycled engineering plastics that maintain the mechanical performance of virgin PVC and UPVC, reducing the carbon footprint of structural piping.
Upgrading to robotic assembly cells where 100% of sealing rings, handles, and valve cores are fit and torque-verified by automated sensors.
From selecting and configuring the right machine for your job to helping you finance the purchase that generates noticeable profits.
At Ehao, we build trust with global sourcing partners by providing comprehensive engineering and technical support, custom packaging design, and flexible logistics management. Our team coordinates with your logistics providers to ensure smooth port handling and fast customs clearance across Europe, North America, and South America.
Working in international markets requires strict compliance with varying safety and engineering regulations. Ehao Plastic Group products meet or exceed global standards such as ISO 9001, ASTM, BS, and DIN, allowing seamless integration into municipal infrastructure designs. Our logistics network serves 28+ countries, ensuring secure shipping, customs documentation compliance, and transparent tracking.
We provide full technical documentation for every batch of goods, including raw material certificates, hydrostatic pressure charts, and dimensional compliance logs. This data transparency reduces QA testing times for importing engineers, speeding up installation and deployment cycles.
Engineered for high performance, consistent flow rates, and long-term chemical resistance.
EHAO
