In the secondary market, there is no unified "ranking" of popular and reliable models, and their value is highly dependent on the type of products you intend to process, raw materials, and production volume requirements. However, brands and models with a long history, large installed base, and classic designs are indeed more favored.
|
Equipment Category |
Representative Brand/Model Features |
Main Applications and Reliability Features |
Reasons for Its Popularity |
|
Extruder (Sheet/Pipe/Profile) |
European Brands: W&H (Windmöller & Hölscher) Macchi KraussMaffei / Berstorff |
High-end films (such as packaging films), high-quality sheets/pipes. Precisely designed, featuring exceptional stability and outstanding durability. |
Excellent Performance: Core components (such as gearboxes) boast a long service life and stable process performance even after years of use. High Resale Value: With globally recognized brand reputation, these machines are relatively easy to resell. For example, a 2015 W&H Filmex 120.30D extruder remains a sought-after model in the secondary market due to its brand reputation and superior performance. |
|
Domestic Leading Brands: Large-scale extrusion production lines from Jinhu, Liansu, Fangli, and other manufacturers. |
General-purpose pipes (such as PVC/PE water supply and drainage pipes), profiles (door and window frames), and sheets. Excellent cost-performance ratio, meeting most domestic production requirements. |
Large Installed Base: Commonly available in the market, with easy access to spare parts and technical services, resulting in low maintenance costs. Price Advantage: The purchase cost is significantly lower than that of imported equipment of the same class. |
|
| Pelletizer |
Two-stage Recycling Pelletizing Line |
Recycling of waste plastics (such as films, woven bags, and bottle flakes). Equipped with forced feeding and vacuum degassing systems, it can effectively process recycled materials containing impurities and moisture. |
Wide Applicability: Highly suitable for the booming recycled plastics industry in China. Practical Structure: Designed specifically for the characteristics of recycled materials, with relatively controllable failure rates. |
|
Co-rotating Twin-screw Pelletizer |
Modification of engineering plastics, masterbatch, and pelletizing of high-performance materials. Excellent mixing and dispersion performance, with modular combination capability. |
High Professionalism: As a "standard configuration" model in the modified plastics industry, it enjoys stable demand. Classic Design: Examples include the ZSK series from Coperion Germany (a recognized benchmark), but used imported models are scarce and expensive. Domestic models (such as Nanjing Keya and Gansu Lantai) are the mainstream choice. |
|
|
Injection Molding Machine |
European/Japanese Brands: Engel Demag Arburg Fanuc / Sumitomo |
High-precision products, automotive components, medical devices, etc. High repeatability, energy-efficient, and durable. |
Quality Benchmark: Irreplaceable in fields requiring high stability and precise control. Stable Residual Value: High-end models from renowned brands (such as the Engel two-platen machine mentioned in the text) still have a market even at high prices. |
|
Taiwan, China/Mainland China Brands: Haitian Chen Hsong Yizumi Topstar |
General-purpose plastic products, daily necessities, and industrial components. Cost-effective and practical, meeting over 80% of conventional injection molding requirements. |
Absolute Mainstream: With a huge installed base and a well-established service system, it is the absolute mainstay in the secondary market circulation. Entry-Level Choice: Affordable and widely chosen by small and medium-sized factories for startup or capacity expansion. |