QZF-89

American standard

reclaim breath

QZW-1

  block fire

          GFJ

        ZGB-1

           GKP

    ZQF-1

      GFQ-2

      GHF-1

 BF7/BF8 HX7/HX8

         FAH

    ZGB-II/ZH-I

        GYW-1

          FAHX