kankarrio:
Welcome to the forum.  Your English would not be any worse than my Spanish, because I would have to use a translator just like you.
Earlier this year I bought a DDCSV for use in a CNC router that I am building.  I cannot tell you how it is working because I have not been working on that project for a while, I really need to get back to work on it.  
There is a thread on this forum about the DDCSV that spans several years, and after talking with them I have high hopes for my project.  Let us know how yours works out.
Don