"组合房屋配件制造" can be translated as "manufacturing of prefabricated housing components" or "production of modular house accessories".
Here, "prefabricated housing" refers to houses that are constructed from pre-made components, which aligns with the concept of "组合房屋" (combination or prefabricated houses). "Components" or "accessories" can be used to describe the various parts that make up these houses, such as walls, roofs, doors, windows, etc.
Both translations convey the idea of manufacturing parts or accessories for prefabricated or modular houses. You can choose the one that best fits your context or preference.