Material: FRP ABS color: red, yellow, blue white Storage: -10 to + 50 ℃, should be placed in ventilated and dry place, and avoid contact with fire (heat) source and aggressive substances, so as not to affect the life of their normal use. Purpose: helmet to prevent head injury impact object protective equipment. From the cap shell, hat lining, with lower cheek and back hoop components. Hemispherical cap shell, firm, smooth and have some flexibility, impact and puncture blow was mainly borne by the kinetic energy of the cap shell. Left between the cap shell and cap liner certain space, buffer, dispersing instantaneous impact, so as to avoid or mitigate the immediate damage to the head. Category: White: Leaders blue: Management yellow: red construction workers: foreign workers