Security warehouse data aggregates many core resources in spot e-warehouse receipt technology, commerce, legal affairs and finance, and focuses on legal digital voucher - national standard e-warehouse receipt to realize asset voucher, voucher digitization and data visualization, Full provision of legal digital certificate of chattel property right (warehouse receipt and bill of lading) four types of technical and service support for the construction, operation and financial application, transaction application and regulatory application of operation facilities, so as to realize the universal deployment, safe and convenient application of legal voucher financing of movable property, effectively cover hub cities and major economic regions, support the upgrading of inclusive digital services of commodity finance, and help solve the financing difficulties, high financing costs and difficulties of small and medium-sized enterprises Complex financing and other issues to boost the development of green and intelligent supply chain.