Kashima Coat, is this the best?

[petersi]

I am looking for the smoothest coating for car shock body (made by 6061) which will rub against piston. Found this costing called Kashima Coat,

http://www.kashima-coat.com/en/experience/whats_cashima_coat.php

Want to know if there is any other coating what works for my need? Ot something better then the Kashima Coat? thank you