The hydrophilic coating is deposited on {HEAD ~ the unipolar plates} prior to {TAIL ~ the unipolar plates} being assembled into the flow field plate so that line of site deposition processes can be used to coat the flow field channels in the tunnel region 
The hydrophilic coating is deposited on { HEAD ~ the unipolar plates } prior to { TAIL ~ the unipolar plates } being assembled into the flow field plate so that line of site deposition processes can be used to coat the flow field channels in the tunnel region
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH