On February 18, 2014, I've received inform from Faratech to stop using TR-173Y.
The reason is as follows.
1. When they compare SST between TR-173Y and Dipsol ZT-444, they found TR-173Y often occur white rust 0.5-1.0% before 72hr. But SST of Dipsol no white rust 0% after 72hr. Even we tried to adjust many condition of TR-173Y, still have this problem.