What are the four winter defenses of Qingdao Port?

Cold-proof, anti-skid, anti-freeze and fire-proof.

The four precautions in winter refer to the four preventive measures that companies need to take in order to ensure the safety of production and employees in winter. These four measures are cold protection, anti-skid, anti-freeze and fire protection. Cold protection refers to taking measures to prevent the impact of cold weather on employees' health in winter, anti-slip refers to taking measures to prevent slips and falls in winter, antifreeze refers to taking measures to prevent equipment and pipes from freezing in winter, and fire prevention refers to taking measures in winter Prevent the occurrence of fire.