GDMZ Transformer Tan Delta Tester Sold to Vietnam

Recently we completed an order for our regular customer in Vietnam. Which includes GDMZ Transformer Tan Delta Tester and GDJZ-AC100KV DC140KV 5KVA AC DC Hipot Tester.  It's him second time purchased our equipment. Last year he purchased GDBC-901 Transformer Turns Ratio Tester and GDJZ-AC50KV DC70KV 15KVA from our company.