Is the domestic press machinery good to use?
The biggest problem of the domestic press production is security issues. Ordinary people can not afford to choose absolutely secure raw material, obtained oil is crude oil, and no conditions for professional refining, some of the toxins and harmful substances can not be removed, once stored a long time, easily degenerate.
On the other hand, from the point of view of industrial development, large-scale use of home oil press will cause great waste of resources. This is because the refining of edible oil will have a certain degree of dross residue, home press slag is much higher than the rate of professional press, dross can not produce a good deal. If every household in its own oil, will result in a great waste of resources.
