The C E logo is misleading. It resembles the European confirmation to standards but that is a misleading use. It is the actual China Export logo. There is no description on the actual use of the valves. A turning knob and another valve like knob are not explained at all. Also the warranty is an issue: it requires defective item to be returned and shipping cost is for the buyer. This prohibits a proper warranty execution. A defective product does not require return if buyer can prove with video or foto item is defect
Lacks installation information. There is no operating description for two important controls. The installation markings (flow direction) are faintly present
VERY DISAPPOINTED, ITEMS NOT DELIVERED