In line with the Facilitation and Networking of Trade Project, the EPA initiates this project to build a system that connects with the Customs system for cross checking of the Permit and the Customs declaration to facilitate the cargo clearance procedures. The system should be able to access the existing systems of the Department of Waste Management and the Department of Environmental Sanitation & Toxic Substance Management, in order to acquire permits information. This system should check the customs declaration data(X801) against the relevant data items of the concerned permit to ensure the consistency between declaration and the permit of the cargo. Having done the checking, the system should return a message of X802 to the Customs system. The Customs system can proceed its following procedures with the X802 message. Through the checking process the cargo clearance can be completed without any paper work involved. And our trading competitiveness will hence be enhanced. The system is composed of two sub-systems. One is designed to access the existing systems to acquire issued permits information, and check X801 messages against permits. The sub-system also provides web inquiry functions. The other sub-system,which follows ebXML protocol, builds an ebMS Gateway to connect with the Customs system for exchanging X801 and X802 messages.