PROPERTY, PLANT AND EQUIPMENT - Summary of property and equipment (Details) - USD ($)	Sep. 30, 2019	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Accumulated depreciation	$ (1,667,115)	$ (1,689,936)
Property, plant and equipment	1	1
Land and Building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	938,875	951,728
Plant and Machinery
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	16,254	16,476
Office equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	18,799	19,057
Project equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	647,570	656,434
Computer
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,226	10,365
Motor Vehicle
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 35,392	$ 35,877