General requirements for safety helmets

(1) The hat hoop can be adjusted according to the applicable range.
(2) The forehead area of the headband should have sweat absorbing properties or an increased sweat absorbing band, with a width greater than or equal to the width of the headband.
(3) The straps should be made of soft textile fabric, with a width of not less than 10mm or a diameter of not less than 5mm.
(4) Toxic and harmful materials shall not be used, and materials that come into contact with human body parts shall not cause allergic irritation to the skin.
(5) The aging resistance of materials should not be lower than the date indicated on the product label. Safety helmets used normally should not have performance lower than the standard due to material reasons during use. All materials used should have the same expected lifespan.
(6) The accessories of the safety helmet must not disrupt the stability of the helmet when worn normally.
(7) Weight (mass): Ordinary safety helmet not exceeding 430g; Cold proof safety helmet should not exceed 600g.