1
Chemicals used as water softening agents and water cleaning agents for industrial, commercial and domestic use
6
Valves, namely, manually operated metal valves for water conduits
7
Filters, namely, engine filters for gas, air and oil engines used in regulating water flow
10
Filters, namely, ultraviolet filters for use in medical applications
11
Filters, namely, air filters for industrial, commercial and domestic installations, filtering units for producing filtered air for industrial, commercial and domestic installations, filtering units for producing potable water for industrial, commercial and domestic use, filtering units for producing softened water for industrial, commercial and domestic use, filtering units for producing sterilized water for industrial, commercial and domestic use, and filtering units for distributing water for industrial, commercial and domestic use
20
Valves, namely, plastic disk valves for water conduits
22
Wadding for filtering