Leather means technological innovation. The fundamental measure to prevent dust hazard is to reform the technological process and production equipment, so that no or less dust is produced in the production process, and low-toxic dust is used instead of high-toxic dust.
Protection is personal protection. If the dust concentration in the workplace can't be reduced below the national health standard after taking certain measures or the dust-proof facilities fail, it is still a good solution to wear dust masks for workers who come into contact with dust.