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This pattern is used in formal written Chinese to say that a company or person has received a document officially issued or approved by an authority. “签发” means to issue officially, and “核准签发” adds the meaning of formal approval before issuance. It is common in news, business, and legal contexts.

In formal contexts, “同意” is often followed directly by the thing or product being approved, and then the action it is allowed to carry out. This structure is common in regulatory and administrative language, where an authority gives permission for a drug, company, or person to do something.

This pattern means “under” or “within” a certain condition, theory, framework, or circumstance. It is often used in formal and academic Chinese. In the text, it shows the theoretical basis or guidance under which something was developed.

“用于” means “to be used for” and introduces purpose, target use, or application. It is more formal than “用来”. It is especially common in medical, technical, and official writing.

“而成” is a formal result complement meaning that something is formed, developed, or completed through the preceding action. It often appears after verbs like “研发”, “加工”, “组合”, showing the process that led to the final result.