This standard is proposed by State Bureau of Building Materials Industry.

本标准由国家建筑材料工业局提出。

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All our product adopt the international standard, and pass the test of State and the province Bureau of Quality and Technical Supervision, and reach the level of the world.

公司所有产品均采用国际标准组织生产，并经国家、省技术监督局、北京铁科院、南京水科院采标验收，达到国际先进水平。

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The gold standard material of high grade ore was prepared in this Institute. It was approved and assigned as the first class standard material by the state Supervision Bureau of Technical Quality.

研制了高品位矿石金标准物质，并已获国家技术质量监督局批准为国家一级标准物质。

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