1. The back cover of showerhead could change from brass into SUS304, if you'd like to save cost (front cover still use brass, back cover use SUS304). 2. Air function or LED function could be added in any normal showerhead. 3. All colors is available, such as black, brushed nickel, antique copper,etc. 4. The plating of surface can meet 48hours acid salt spay test, usually we quote price based on 24hours acid salt spay test. 5. Semi-finished showerhead is available for sold. 6. ANLIN provide free laser service, if quantity is higher than 1000pcs/item (trademark authorization letter needed) 7. Besides brass & SUS304 showerhead, ANLIN also produce built-in covers, shower hose, sliding bar 8. OEM & ODM is welcomed