AP-TK-B01

-Features, Functions & Warranty Period

1. The helmet features ventilation holes around its perimeter, facilitating comprehensive airflow to keep the rider's head cool and ventilated.

2. The helmet is equipped with a head circumference adjuster, which can be rotated to fine-tune the fit; the inner padding is removable and washable.

3. The face shield options include a full-length windproof visor or a shorter protective goggle-style lens; the lens base is designed for user-friendly removal and replacement of lenses.

4. Warranty period: two years.

-Materials and Craftsmanship

1. Shell Material: Imported high-impact-resistant ABS, injection-molded. Shell thickness: 3.5 mm.

2. Visor Material: PC (polycarbonate), injection-molded, surface-hardened. Lens thickness: 2 mm.

3. Helmet Color Options: Traffic police ceramic white, special police matte black, public security navy blue.

4. Exterior Marking Material: Silver-white and blue reflective film.

5. Buffer Layer: Effectively absorbs impact energy. Materials are non-hazardous, non-toxic to the human body, and certified antibacterial.

-Face Shield Visual & Performance

1. Visor Visible Light Transmittance: ≥ 85%; Optical Distortion: ≤ 6' (minutes of arc).

2. Visor Light Transmittance: 95% (inclusive) to 100% (inclusive).

3. Anti-Fog Performance: The visor employs an anti-fog film or coating. When tested according to Method 6.5.1.4 of Standard GA295-2001, no fogging shall form on the goggle surface.

4. Performance Tests Passed: The helmet has passed the Goggle Performance Test, Rigidity Performance Test, Retention System Stability Test, and Retention System Strength Test.

-Internal Components

1. Internal Lining: 2.2 cm thick foam buffer layer, with well-designed intake and exhaust vents integrated into the foam. The part in contact with the head consists of a removable, high-quality elastic fabric comfort liner, washable sweat-absorbent mesh, and other breathable materials.

2. Retention System: Dual-layer 22 mm wide nylon chin strap. The buckle adopts a quick-release cord mechanism design, offering high tensile strength, corrosion resistance, rustproof properties, secure connection, and easy disengagement. After being worn, the buckle shows no breakage or disengagement under a 2 kN tensile force and remains fully functional.

-Helmet Impact Absorption Performance

1. High-Temperature Impact Absorption Performance: After preconditioning at high temperature (50°C + 2°C for 4 hours), the helmet is mounted on the corresponding headform, raised to a height of 1835 mm + 5 mm, and allowed to fall freely onto a circular flat anvil at two arbitrarily selected points (spaced at least 120 mm apart), one impact per point. The peak acceleration shall be ≤300 g, and no cracking shall occur on the helmet shell.

2. Low-Temperature Impact Absorption Test: After preconditioning at low temperature (-20°C + 2°C for 4 hours), the helmet is mounted on the corresponding headform, raised to a height of 1835 mm + 5 mm, and allowed to fall freely onto a circular flat anvil at two arbitrarily selected points (spaced at least 120 mm apart), one impact per point. The peak acceleration shall be ≤300 g, and no cracking shall occur on the helmet shell.

3. Rain Exposure Impact Absorption Test: After preconditioning under rain spray (water spray rate: 15 L/min for 1 hour), the helmet is mounted on the corresponding headform, raised to a height of 1835 mm + 5 mm, and allowed to fall freely onto a circular flat anvil at two arbitrarily selected points (spaced at least 120 mm apart), one impact per point. The peak acceleration shall be ≤300 g, and no cracking shall occur on the helmet shell.

-Helmet Penetration Resistance Test

A 3 kg steel cone is dropped freely from a height of 3000 mm + 5 mm. The test is conducted twice, with the impact points spaced at least 75 mm apart. The steel cone must not penetrate the helmet to make contact with the headform.