As the Chinese leading carbon calibration service provider, Zero Carbon System issued the first carbon calibration certificate in Mainland China, the first zero-carbon certificate, the first product carbon footprint assessment based on ISO14067, the first passed by ISO14064-1:2006 and CD 14067 during the World Expo, which was summarized as “four first”. It opened China's first carbon calibration. On May 4, 2010, after checking and confirming by the third party certification body, Shanghai Zero Carbon System awards the first carbon calibration certificate of Mainland Chinese manufacturing enterprises based on the whole product life cycle to Zhongshan nature wood industry co., LTD. On May 22, after guiding Zhongshan nature wood industry co., LTD for carbon neutral, Shanghai Zero Carbon System awards zero-carbon certificate of Mainland Chinese manufacturing enterprises.