The Type 022 Houbei PCFG appears to be building at a rate of about 10 units per year.
The ships are 20 long tons (224 t) full load and are 42 meters long.
They have a top speed of 36 knots
80 of the ships would be able to launch 640 missiles. (8 a piece)
Cost estimates vary from $14.3 million to $50 million. China could make 260-800 for the cost of one $13 billion aircraft carrier.
SOURCES - wikipedia, Global Security