VAHTS Dual UMI UDB Adapters Set 1-Set 8 for MGI is a special kit for library preparation of BGI high-throughput sequencing platform. It applies to multi-sample DNA library preparation of BGI high-throughput sequencing platform. The kit includes VAHTS Dual UMI Adapters for MGI UDB and VAHTS Unique Dual Barcode Primer for MGI. In the kit, VAHTS Dual UMI Adapters for MGI UDB is an incomplete double-ended UMI adapter that is compatible with a variety of T-A connected library preparation kits. A 5-6 nt Unique Molecular Identifier(UMI) was added to each end of Insert DNA afterAdapters connection, which could be used to detect low-frequency mutations. The VAHTS Unique Dual Barcode Primer for MGI contains Unique Dual Barcode(UDB) with specific collocation. After library amplification, double test of two completely independent indexes can be realized. Index hopping & Index misassignment can be minimized to ensure that Reads entering the analysis process are close to the real situation of the sample.