The manual is ... Chinese and Chinglish :
*regulator / steady flow characteristics "
The series features the work of power as the voltage regulator /
converter-type automatic steady flow, it changes with the load
Regulators with the state of steady flow between the consecutive
conversion, the voltage regulator and a state of steady flow as a
point of intersection between the conversion to For-point.
At least that's better English than I could render Chinese. A long,
long, time ago we got an order from China for a vlsi layout system.
We actually got an export license, but the money never reached us, so
we didn't ship it.