Total revenues increased by 27.2%, or approximately RMB2.4 million ($0.4 million), from RMB9.1 million for the three months ended September 30, 2012 to RMB11.5 million ($1.9 million) for the same period of 2013. This increased was mainly driven by automation business and sales of furnaces.
Gross profit increased to approximately RMB5.3 million ($0.9 million) for the three months ended September 30, 2013 from approximately RMB2.4 million for the same period in 2012. Our gross profit as a percentage of revenue increased to 46.0% for the three months ended September 30, 2013 from 27.0% for the same period in 2012.
Selling and distribution expenses increased by 6.7%, from approximately RMB1.3 million for the three months ended September 30, 2012 to approximately RMB1.4 million ($0.2 million) for the same period of 2013. This increase was primarily from increased service charges.
General and administrative expenses increased by 38.3%, or RMB0.8 million ($0.1 million), from approximately RMB2 million in the three months ended September 30, 2012 to approximately RMB2.7 million ($0.5 million) in the same period of 2013. General and administrative expenses were 21.9% of total revenues in 2012 and 23.8% of total revenues in 2013.
Research and development expenses decreased by 54.8%, from approximately RMB1.5 million for the three months ended September 30, 2012 to approximately RMB0.7 million ($0.1 million) for the same period of 2013. This decrease was primarily we devoted fewer resources to R&D for our furnaces and fracturing services in the 2013 period.
Income from operations was approximately RMB0.5 million ($0.1 million) for the three months ended September 30, 2013, compared to a loss from operations of RMB2.3 million for the same period of 2012. This increase in income from operations can be attributed primarily to the increased revenue, improved gross margins, decreased research and development expenses and decreased percentage of revenue for selling and distribution expenses.
Net income attributable to ordinary shareholders was RMB46,444 ($7,569) for the three months ended September 30, 2013, an increase of approximately RMB2.4 million ($0.4 million) from net loss attributable to ordinary shareholders of RMB2.3 million for the same period of 2012.
Adjusted EBITDA improved by approximately RMB3.2 million ($0.5 million) to approximately RMB1.5 million ($0.2 million) for the three months ended September 30, 2013 compared to approximately RMB1.7 million loss for the same period in 2012. This was due to improved operation. Compared to net income attributable to ordinary shareholders, we believe EBITDA more accurately reflects our operations.
As of September 30, 2013, we had cash and cash equivalents in the amount of approximately RMB6.7 million ($1.1 million). Except for approximately RMB0.8 million ($0.1 million) of short-term borrowings, RMB0.9 million ($0.1 million) in lease commitments and RMB17.56 million ($2.9 million) in commercial loans from local banks, we did not have any finance leases or purchase commitments, guarantees or other material contingent liabilities.
Net cash used in operating activities totaled approximately RMB8.0 million ($1.3 million) for the three months ended September 30, 2013. This was a decrease of approximately RMB8.2 million ($1.3 million) compared to net cash provided by operating activities of approximately RMB236 thousand for the quarter ended September 30, 2012. This increase was mainly because we purchased goods in preparation for coming projects.
Net cash used in investing activities was RMB6,720 ($1,095) for the three months ended September 30, 2013, a decrease of RMB374,686 ($61,060) from RMB381,406 for the same period of 2012. The decrease was due to a decrease in purchase of property and equipment.
Net cash provided by financing activities amounted to approximately RMB2.3 million ($0.4 million) for the three months ended September 30, 2013, compared to cash flows used in financing activities of approximately RMB1.1 million for the three months ended September 30, 2012. During the three-month period ended September 30, 2013, we repaid approximately RMB5.2 million ($0.9 million) of short term borrowings to related parties and received RMB7.56 million ($1.2 million) of loan proceeds from a commercial bank, which was guaranteed by one of our shareholders.
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