how will preserve perfect colour values after exporting as a pdf (both spot colour & process colour) in CorelDraw

Hi all,

     I am working in a printing machine manufacturing company. Here, We are manufacturing foil and varnish machines. So, We want accurate colour values after exporting as a pdf. When We are working in adobe software, colour values are the same after exporting as a pdf (for both spot colour and process colour). But, Dealing with CorelDraw, gives a big problem. Colour values changed after exporting as a pdf. how will rectify that? 
   My question is how will preserve perfect colour values after exporting as a pdf (both spot colour & process colour) in CorelDraw.