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China began its research on combustible ice in 1998, as one cubic meter of combustible ice, a kind of natural gas hydrate, equals 164 cubic meters of regular natural gas.
China handled more cases involving violations of environmental protection laws last year as a crackdown on pollution escalated, the Ministry of Ecology and Environment said.
China has been stepping up its investment in oil and gas exploration in recent years and invested a record 82.13 billion yuan (.76 billion) for the same in 2019, up 29 percent from the previous year, according to the Ministry of Natural Resources. Investment for the exploitation of oil and gas resources in the country rose to 252.71 billion yuan in 2019, up 24.4 percent on a yearly basis, the ministry said.
China has been the world leader in applications for invention patents for seven consecutive years. Chinese mainland held about 1.36 million such patents by the end of 2017, according to the State Intellectual Property Office.
China has grown by an average of almost 10 percent per annum since the adoption of the reform and opening-up policy almost four decades ago. The results are spectacular: from the rise of China to the second-largest economy in the world to millions of people coming out of poverty.
来源：资阳报