1. Cold proof cotton helmets can be purchased according to their uses
cold proof cotton helmets can be divided into two categories according to their uses: general operation category (y category) and special operation category (T category). Among them, T category can be further divided into five categories: T1 category is suitable for workplaces with fire sources; T1 category is suitable for workplaces with fire sources; T2 is suitable for underground, tunnel, underground engineering, logging and other workplaces; T3 is suitable for inflammable and explosive workplace; T4 (insulation) is suitable for live working places; T4 (low temperature) is suitable for low temperature workplace. Each kind of cold proof cotton helmet has a certain technical performance index and scope of application, so the selection should be based on the industry and working environment