9 Control Units for Distributing the Flow of Fluid into a Well Under the Action of a Suction Pump Over the Entire Surface Area of the Well Screens, and Parts of the Aforesaid Goods
11 Pipes, Tubes, Conduits, Fittings, and Joint Units for Wells and for the Transmission of Fluid from Wells, Well Filters, Sandscreens for Wells, and Parts of the Aforesaid Goods