Civil engineering indoor environmental pollution control "GB50325-2010 is to prevent and control the civil engineering building materials and interior decoration materials resulting environmental pollution, protect public health and safeguard the public interest, so that the advanced technology, reasonable economy, the development of this specification. This standard applies to new construction, expansion and renovation of civil engineering indoor environmental pollution control, does not apply to industrial construction, warehousing building works, structure and those with special health requirements purify the room. Note: This specification refers to the alleged indoor environmental pollution generated by the building materials and decoration materials, indoor environmental pollution. After the delivery of civil engineering, interior decoration materials produced by non-construction environmental pollution, are not part of this specification control. This specification controlled indoor environmental pollutants radon (Rn-222), formaldehyde, ammonia, benzene and total volatile organic compounds TVOC. The state promulgated the "Residential Design Code" (GB50096-2011) provides that: 7.5.3 Residential activity and concentration of indoor air pollutants to comply with Table 7.5.3. Table 7.5.3 Residential indoor air pollutants name pollutant limits activity, radon concentration limits ≤200 (Bq / m3) formaldehyde ≤0.08 (mg / m3) benzene ≤0.09 (mg / m3) ammonia ≤0.2 (mg / m3) TVOC ≤0.5 (mg / m3) 

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