Junziqian affiliated to Ebaoquan Network Technology Co., Ltd.,is the first electronic contract service provider of full evidence chain in China. Based on the blockchain technology, it not only provides enterprises and individual customers in Finance, Insurance, Education and Training, Logistics Supply Chain, Rental, Tourism, Real Estate and HR with the full life cycle of electronic contracts, electronic document signing, preservation of evidence and related legal supporting services, but also synchronizes the data with the judicial authentication center to ensure the visualization of services and realize the effect of instant singing, insuring and notarizing.Up to now, the electronic data preservation technology developed by Ebaoquan has obtained 12 invention patents, 14 software copyrights, 6 CNAS certification.