How to assemble neighbouring tiles to form a large along-path Sentinel 2 MSI image?

The new tiling and data format in the Open Data Hub has facilitated the downloading efficiency of Sentinel 2 MSI L1 data,the file size is significatly reduced. Recently , I have to assemble some neighbouring tiles in the same track (path) to form an integrated ,large along-track image . I have not find a tool on SNAP to do this. Can anyone give me suggestions for solving this ? Thanks.