取得土建二级建材试验室的资质，必须通过省级计量行政部门计量认证。
The authentification of the measurement administration department of provincial level is necessary for the qualification of a secondary laboratory of building materials.
取得土建二级建材试验室的资质，必须通过省级计量行政部门计量认证。
The authentification of the measurement administration department of provincial level is necessary for the qualification of a secondary laboratory of building materials.
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