Ways to prevent the rust of the manual lever block hook

The rust of the manual lever block hook will reduce the safety of the operation and shorten the service life of the hook. Serious hooks may also break, causing major safety accidents. So how to protect the manual lever block hook from rusting?

Rusty hooks will reduce the safety of the operation and shorten the service life of the hooks. Serious hooks may also break and cause major safety accidents. So how to protect the manual lever block hook from rusting?
1. Lubricating oil is often applied to the hook of the manual lever block to prevent the hook from rusting.
2. The manual lever block is often cleaned, and it will rust if it is not cleaned for a long time. 
3. The hook of the manual lever block does not come into contact with chemical corrosive substances to prevent the hook from rusting. 
4. Clean the hooks in time after the manual lever block is exposed to rain to prevent the hooks from rusting.