From products design-Purchasing material-Production-Inspectation-Packing design, we have a set of complete system. We understand that ?Quality? begins with listening to you the customer. 1, One function: E100301, E200301, E100501with diameter 150mm of shower head, handheld shower and general spray. The spray well under low water pressure, also save water. 2, Three functions: E100703, Handheld shower with three functions, such as spray+massage+spray&massage. 3, Five functions: E100225, e100235 Handheld shower with five functions, such as spray+massage+spay&massage+soft+fog. E200225,E200201,E200211,E200123,E200111,E200101 are belong to shower heads which are easily installed.