And the home use energy conservation fuel gas stove has obtained the country technical monopoly.

其中家用节能燃气灶已获国家技术专利。

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Finally, the technical standards are also hidden monopoly.

最后，技术标准还隐藏着垄断性。

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Finally, the technical standards are also hidden monopoly.

最后，技术标准还隐藏着垄断性。

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