|NO|SIG Name|SIG Tag Name|SIG Leader|Level 1 Subsystem Name|
| :----: | :----: | :----: | :----: | :----: |
|1|SIG_AI|SIG_AI|[chenxiaoliang](https://gitee.com/silenchen)|L1S_AI|
|2|SIG_API|SIG_API|[zhangyongzhi](https://gitee.com/karl-z)|L1S_BackwardCompatibleSDK <br> L1S_SDK|
|3|SIG_Security|SIG_Security|[yangyongjie](yongjie.yan@huawei.com)|L1S_Security <br> L1S_BIOMETRICS|
|4|SIG_CompileRuntime|SIG_CompileRuntime|[huanghuijin](https://gitee.com/huanghuijin) <br> [wangxing](https://gitee.com/wangxing-hw)|L1S_CCRuntime <br> L1S_Build <br> L1S_UTILS|
|5|SIG_Test|SIG_Test|[niexin](https://gitee.com/nie-x) <br> [wangjuntao](https://gitee.com/buranfanchen)|L1S_Test|
|6|SIG_DistributedHardwareManagement|SIG_HardwareMgr|[ligang](william.ligang@huawei.com) <br> [houpengfei](https://gitee.com/hhh2)|L1S_MSDP <br> L1S_PowerMgr <br> L1S_Sensors <br> L1S_USB <br> L1s_DistributedHardware <br> |
|7|SIG_BasicSoftwareService|SIG_BasicSoftwareService|[zhangxiaotian](https://gitee.com/handyohos) <br> [liyu](https://gitee.com/ericlee)|L1S_DistributedSchedule <br> L1S_ResourceSchedule <br> L1S_StartUp <br> L1S_Notification <br> L1S_HiviewDFX <br> L1S_Update <br> L1S_Account <br> L1S_BarrierFree <br> L1S_MiscServices|
|8|SIG_Kernel|SIG_Kernel|[lijiaxin](nina.lijiaxin@huawei.com) <br> [wangmihu](https://gitee.com/wangmihu2008)|L1S_Kernel|
|9|SIG_DriverFramework|SIG_DriverFramework|[chenfeng](https://gitee.com/chenfeng469)|L1S_Drivers|
|10|SIG_DataManagement|SIG_DataManagement|[gongashi](https://gitee.com/gong-a-shi)|L1S_DistributedDataMgr_DFS|
|11|SIG_SoftBus|SIG_SoftBus|[houweibo](houweibo@huawei.com) <br> [chengguohong](https://gitee.com/cheng_guohong)|L1S_Communication <br> L1S_telepony <br> L1S_Location <br> L1S_Communication_HW <br> L1S_Communication_NetMgr|
|12|SIG_GraphicsandMedia|SIG_GraphicsandMedia|[wangjun](wangjun145@huawei.com) <br> [tanliwen](https://gitee.com/tanliwen1)|L1S_Graphic_AGPEngine <br> L1S_MultiModalInput <br> L1S_MultiMedia <br> L1S_Graphic_AGPComponent <br> L1S_Graphic_AGPWindows|
|13|SIG_SystemApplication|SIG_SysApplication|[wangfeng](https://gitee.com/nicolaswang)|L1S_Applications|
|14|SIG_R&DToolChain|SIG_R&DToolChain|[wangzaishang](https://gitee.com/wangzaishang)|L1S_DevTools|
|15|SIG_IVI|SIG_IVI|[guojinwei](guojinwei@huawei.com)|L1S_IVIHardware <br> L1S_IVI|
|16|SIG_TV|SIG_TV|[zhangxiaotian](https://gitee.com/handyohos)|L1S_IntelliTV|
|17|SIG_Wearable|SIG_Wearable|[wangxiangyang](walton.wang@huawei.com)|L1S_WearableHardware <br> L1S_Wearable|
|18|SIG_ApplicationFramework|SIG_AppFramework|[qiangbo](https://gitee.com/huawei_qiangbo) <br> [niuhui](niuhui@huawei.com)|L1S_Global <br> L1S_AppExecFwk <br> L1S_AAFwk <br> L1S_ACE|
|19|SIG_Docs|SIG_Docs|[yangni](https://gitee.com/neeen)|L1S_Docs|
|20|SIG_Infrastructure|SIG_Infrastructure|[wangyiming](https://gitee.com/youthdragon)|NA|
|21|SIG_QA|SIG_QA|[xingwenhua](https://gitee.com/xhuazi)|NA|
|22|SIG_Architecture|SIG_Architecture|[rengelin](https://gitee.com/im-off-this-week) <br> [wanchengzhen](https://gitee.com/wanchengzhen)|NA|
|23|SIG_Release|SIG_VersionRelease|[mazhanfu](https://gitee.com/fma66169)|NA|