1, the safe service life of the equipment shall be no less than 8 years, and the equipment exceeding the safe service life shall be scrapped and dismantled; During the safe use period, the supplier shall ensure that the wearing parts are repaired and replaced in time before being damaged.

2. The content of harmful substances in the materials used in the equipment shall not exceed the standard, so as to prevent the harm to the health of users.

3. The equipment should not have any structure that may cause the user's head, neck, trunk, hands, fingers and feet to be pinched, cut and squeezed; There should be no structure that causes the clothes and hair to hook or entangle.