歌尔光学科技上海公司注册资本增至2亿元

This pattern is used to show a change in quantity, amount, or level from an original figure to a new figure. It is very common in news and formal writing when reporting growth, price changes, capital increases, and similar changes.

This structure means that one company completely owns another company. “由” introduces the agent or responsible party, and “全资持股” means holding 100% of the shares. It is common in business and legal Chinese.

This pattern is used to state the time when an organization, company, or institution was founded. “于” is a formal preposition meaning “in” or “at,” often seen in written Chinese.

This structure introduces examples within a larger category. “包括” means “include,” and “等” signals that the list is not complete. It is useful for giving representative items without listing everything.

In formal and news Chinese, “显示” is often used after a source to introduce reported information. It functions like “shows that” or “according to ...” in English.