Note 16 - Concentrations and Credit Risk: Customer concentrations table (Details)	9 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Details
Percent of sales to Qufu Shengwang Import and Export - Stevioside	41.20%	46.00%
Percent of sales to Guangdong Tengjun Veterinary Medicine Co., Ltd - Chinese Medicine		11.60%
Total percent of sales to major customers - Chinese Medicine	0.00%	11.60%
Total percent of sales to major customers - Stevioside	41.20%	46.00%