Factory-Prefabricated Plastic Houses

Factory-prefabricated plastic houses are a细分类型 (sub-type) of prefabricated modular buildings. Their core lies in the industrial production of components and on-site assembly, characterized by efficiency and integration. However, it should be noted that the term 'plastic' may refer to certain components rather than the entire house structure.

I. Technical Systems and Types of Factory-Prefabricated Houses

Prefabricated modular buildings are produced industrially, with components such as walls, floors, and roofs assembled on-site. They mainly fall into three categories:

1. Panel-Based Assembly: Using prefabricated panels (e.g., concrete panels, lightweight partition panels) as basic units, these are assembled into an overall structure through connectors, suitable for multi-story residential or public buildings.
2. Box-Based Assembly: Utilizing complete spatial modules (e.g., 'boxes' with windows, doors, and interior finishes) as units, these are directly stacked or spliced, commonly found in temporary buildings or low-rise residences.
3. Frame-Based Assembly: Supported by prefabricated frames (e.g., steel or concrete frames) and paired with enclosure structures, this approach offers high flexibility and is suitable for high-rise buildings.

Modular buildings represent a higher level of integration. For example, the modular houses produced by Shenzhen's 'Super Factory' come off the production line every 20 minutes, complete with fine decoration, furniture, and appliances. They are assembled on-site using self-balancing cranes, with joints sealed and reinforced with mortar, enabling 'move-in ready' occupancy.

II. Production and Export Advantages of Factory-Prefabricated Houses

1. High Production Efficiency: Chinese prefabricated house factories have short production cycles. For instance, a factory in Hengshui, Hebei, can build a house in just 15-25 days and deliver it to overseas customers within three months.
2. Strong Cost Competitiveness: The cheapest container-style cabins have an ex-factory price of less than RMB 6,800, offering significant price advantages.
3. Broad Export Market: From 2020 to 2025, China's prefabricated building exports increased from USD 1.7 billion to USD 4.3 billion, with major buyers being the United States, Southeast Asia, Australia, and Western Europe.

III. Industry Challenges and Considerations

1. Intense Homogenized Competition: Some products have seen a decline in ex-factory prices due to excessive competition, thinning profit margins.
2. Clarification of Materials Needed: If 'plastic houses' refer to those entirely made of plastic, it should be noted that current mainstream prefabricated houses still primarily use concrete and steel structures, with plastic possibly only used for certain components (e.g., pipes, decorative panels). Fully plastic houses need to address issues such as durability and fire resistance and are currently less commonly applied.

Summary: Factory-prefabricated houses are characterized by efficiency and integration, with modular buildings representing a leading direction. China holds advantages in exports and costs but needs to address homogenized competition and the rational application of materials.