海天股份：与通威太阳能签署战略合作协议合作开发钙钛矿浆料等事项存在不确定性

“与” means “with” and is commonly used in formal written Chinese to show the other party in a joint action. “签署” is a formal verb meaning “to sign,” especially for agreements, treaties, or official documents. Together, this pattern is very common in business and news Chinese.

“仅为” is a formal written pattern meaning “is only” or “merely is.” It is used to limit the nature or status of something, often to clarify that it should not be understood too strongly or too broadly.

“构成” means “to constitute” or “to form.” In formal, legal, or news language, “不构成……” is used to say that something does not legally or formally count as something else. This is a common structure in contracts, announcements, and official statements.

This pattern is used in formal Chinese to express that something is uncertain or that uncertainty exists. “存在” means “to exist,” and “不确定性” means “uncertainty.” It is especially common in news, finance, and official writing.

“为” here means “for” and introduces the purpose or target of an action. In formal writing, “为……建立……” means “to establish something for something,” often showing support, standards, conditions, or systems created for a later goal.