Cooling Fan Rotational-molded Plastic 1.Endurable, never rust 2.Stable structure with less noise 3.High Wind Quality Cooling Fan-Plastic BodyThe main structure of the fan body is manufactured by Rotational-molded Plastic. Comparing the traditional material—galvanized steel, Rotational-molded Plastic has many obvious advantages:1. Endurable, never rust2. Stable structure with less noise3. High ...