What does the Shanghai Economic Investigation Board mean after the lightning explosion of Yuanfuda?

Yuanfuda is a listed company, and the explosion means that the company has serious business difficulties and cannot repay its debts on time or maintain normal operations. Shanghai Economic Investigation refers to the economic crime investigation department of Shanghai Public Security Bureau, and card sealing refers to the temporary freezing of bank cards of individuals or organizations suspected of illegal crimes.

According to your description, the Shanghai Economic Investigation Bureau blocked the card after the explosion of Yuanfuda mine, which may mean that the Shanghai Economic Investigation Bureau launched an investigation into Yuanfuda's alleged economic crimes and frozen the bank account of the company to prevent it from continuing its illegal activities and protect the interests of the victims. The specific situation needs further information and investigation to determine.

Please note that the above answers are only based on general situation and common sense, and the specific situation may be different. Please consult relevant departments or official channels for accurate information.