娃哈哈精机公司被决议解散，曾担负娃哈哈智能化、机器人研发等业务

Uses 于 plus a date/time noun phrase to indicate when an official action, such as publishing, took place.

Expresses that an action is currently underway, similar to English “in the process of.”

Uses 已 (or 现已) before a verb to show that the action has already occurred or been completed.

Introduces the agent or source in a passive or service context; 由 marks who provides something.

Uses 让 to let or cause someone to do something, often granting them early access or priority.