WT Microelectronics (3036 TT) today announced its unaudited monthly sales for May 2018 totaled NT$18.22 billion, an increase of 8.7% from April 2018 and an increase of 38% over May 2017. Aggregated sales for January to May 2018 totaled NT$84.62 billion, an increase of 31.1% compared with the same period in 2017.