buy Ultra-violet Erasers

We are looking for really reliable supplier of anthracite coal from North Korea and Vietnam. The anthracite are washed , and it will be used in fertilizer factory.So it must be  enough hard.
   the size within 30-90mm
  the moisture less than 1%
       fixed carbon more than 80%.
      calorific value more than 7000 kcal /kg.
      S less than 0.5%.
    Our requirement 5000mt per month ,the quantity is fixed and regular monthly.
   We hope establish long stable business with reliable seller.
   Pls offer details with best competitive CIF RI ZHAO sea port or LanShan sea port,China.