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产(Chan)品(Pin)搜(Sou)索(Suo)
资(Zi)讯(Xun)动(Dong)态(Tai) | News
国(Guo)家(Jia)关(Guan)于(Yu)石(Shi)材(Cai)放(Fang)射(She)性(Xing)的(De)分(Fen)类(Lei)控(Kong)制(Zhi)标(Biao)准(Zhun)是(Shi)多(Duo)少(Shao)?(?)
时(Shi)间(Jian):(?)2017-3-17 22:30:56   点(Dian)击(Ji):(?)1961

为(Wei)了(Liao)保(Bao)护(Hu)广(Guang)大(Da)消(Xiao)费(Fei)者(Zhe)的(De)身(Shen)心(Xin)健(Jian)康(Kang),(?)发(Fa)展(Zhan)我(Wo)国(Guo)的(De)石(Shi)材(Cai)事(Shi)业(Ye),(?)国(Guo)家(Jia)建(Jian)材(Cai)局(Ju)会(Hui)同(Tong)卫(Wei)生(Sheng)部(Bu)于(Yu) 1993 年(Nian)制(Zhi)定(Ding)了(Liao)《(?)天(Tian)然(Ran)石(Shi)材(Cai)产(Chan)品(Pin)放(Fang)射(She)性(Xing)防(Fang)护(Hu)分(Fen)类(Lei)控(Kong)制(Zhi)标(Biao)准(Zhun)》(?)。(?)按(An)天(Tian)然(Ran)石(Shi)材(Cai)的(De)放(Fang)射(She)性(Xing)水(Shui)平(Ping),(?)把(Ba)天(Tian)然(Ran)石(Shi)材(Cai)产(Chan)品(Pin)分(Fen)为(Wei) A 、(?) B 、(?) C 三(San)类(Lei)。(?)

①(?) A 类(Lei)产(Chan)品(Pin)。(?)该(Gai)类(Lei)产(Chan)品(Pin)使(Shi)用(Yong)范(Fan)围(Wei)不(Bu)受(Shou)限(Xian)制(Zhi)。(?)

②(?) B 类(Lei)产(Chan)品(Pin)。(?)该(Gai)类(Lei)石(Shi)材(Cai)产(Chan)品(Pin)不(Bu)可(Ke)用(Yong)于(Yu)家(Jia)居(Ju)装(Zhuang)饰(Shi),(?)但(Dan)可(Ke)用(Yong)于(Yu)其(Qi)它(Ta)一(Yi)切(Qie)建(Jian)筑(Zhu)物(Wu)的(De)内(Nei)、(?)外(Wai)饰(Shi)面(Mian)。(?)

③(?) C 类(Lei)产(Chan)品(Pin)。(?)该(Gai)类(Lei)产(Chan)品(Pin)只(Zhi)可(Ke)用(Yong)于(Yu)一(Yi)切(Qie)建(Jian)筑(Zhu)物(Wu)的(De)外(Wai)饰(Shi)面(Mian)。(?)

④(?) 放(Fang)射(She)性(Xing)比(Bi)活(Huo)度(Du)大(Da)于(Yu) C 类(Lei)控(Kong)制(Zhi)值(Zhi)的(De)石(Shi)材(Cai)产(Chan)品(Pin),(?)只(Zhi)可(Ke)用(Yong)于(Yu)海(Hai)堤(Di)、(?)桥(Qiao)墩(Dun)及(Ji)碑(Bei)石(Shi)等(Deng)其(Qi)它(Ta)用(Yong)途(Tu)。(?)

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