In {TAIL ~ this preferred process}, only the initial thin layer is deposited from the lower concentration solution, the entire remaining thickness being plated from {HEAD ~ more concentrated solution} 
In { TAIL ~ this preferred process } , only the initial thin layer is deposited from the lower concentration solution , the entire remaining thickness being plated from { HEAD ~ more concentrated solution }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD