Object data locking is generally per-object. Well, unless you don't have huge scalability issues, in which case you may have some external bigger lock (extreme case: one single global lock).
External battery supply electricity for the door lock, thoughtful and more humanity.
可外接电池盒给门锁供电，考虑周到，更加人性化。
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The special Chamomile Hydrosol in this product can reduce external stimulus, enhance the skin's anti-allergy abilities, input nutrition and lock in the moisture, making the skin glamorous.