China's national voluntary greenhouse gas emission reduction trading system saw 231,005 tonnes of certified emission reductions (CCER) change hands on Aug 28, with turnover of 21.92 million yuan ($3.23 million) at an average price of 94.90 yuan/t, according to exchange data. Cumulative volume since the market's launch reached 21.69 million tonnes by Aug 28, with total turnover of 1.73 billion yuan.