China 4 Points Best Price Customized Rescue Safety Helmet

"V" top rib distribute the higher impact and lateral rigidity.
4 points suspention with buckle adjustment,Visor:3.5CM,elastic chinstrap.
High absorption,washable,replaceable,comfortable sweatband.

Side slots allow earmuffs or face shield to attach easily.
Buckle suspension(Ratchet suspension,Pinlock suspension are available)
Techniques:

Chin strap anchorages:171 (Force to release jaw(N)) (limit >=150:<=250).

Flame resistance:the shell didn't burn with the emission of flame after a period of 5seconds from removal of the flame.

Resistance to penetration:No contact with headform(from -10ºC to +50ºC)

Shock absorption:Maximum force transmitted:3.18kN (from -10ºC to +50ºC) (limit <=5)

Nape strap increment(mm):3 (limit <=5)

Horizontal distance,Vertical distance,Wearing height all suitable for the standard of safety helmet examination.