Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment, Net.

Schedule of property, plant and equipment

	As of December 31,
	2013		2014		2014
	(RMB)		(RMB)		($)
Buildings and improvements	626,308,198		641,622,780		104,857,457
Machinery	891,911,639		923,433,082		150,912,417
Office equipment and furnishing	1,464,293		1,468,593		240,006
Motor vehicles	4,650,975		3,632,489		593,641
Total cost	1,524,335,105		1,570,156,944		256,603,521
Total accumulated depreciation	(380,612,477	)	(497,512,176	)	(81,306,125	)
Construction in progress	—		23,410,891		3,825,934
Total property, plant, and equipment, net	1,143,722,628		1,096,055,659		179,123,330