碳酸锂价格企稳回升，锂电产业链投资机遇凸显

Used to indicate the starting point of a time period continuing up to the present or another reference point. It is common in formal written Chinese, especially in news and reports.

Used to mark the deadline or endpoint of a period, meaning 'up to' or 'as of' a certain date or time. Often appears in statistics, reports, and formal writing.

Introduces the identity, role, or status of a person or thing. It is used to explain from what perspective something is being described.

A very common structure meaning to provide something for someone or something. In formal texts, it is often used to describe support, conditions, or opportunities being supplied.

A formal written pattern meaning that something is limited, affected, or constrained by a certain factor. Common in economic, policy, and analytical texts.