Shenzhen Linghang Technology Co., Ltd. (PGST), founded in 2016, is a core subsidiary under Linghang (Shenzhen) Holding Group. It is an industry‑trade integrated e‑commerce enterprise specializing in the smart security sector. The company focuses on four major business tracks: smart security, smart fire protection, smart home and smart elderly care. Leveraging the Group’s full‑industrial‑chain resources and Shenzhen’s geographical advantages in cross‑b