What are the requirements of wearing a safety helmet in construction?
The lower jaw must be fastened, and when the body falls, the helmet is used to protect the head as it wears on the head.
The helmet is composed of two parts: a hat lining and a cap shell, wherein the hat liner and the cap shell can not be closely pressed and should be provided with a certain clearance; when the material falls on the safety helmet shell, the cap liner can act as a buffering action, and the cervical vertebra is not harmed.
