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we manufacture dye intermediates and the heat sensitive pigments applied to carbonless color former?
4-di sodium sulphonate hydrate  benzaldehyde-2  N-diethyl-4-amino benzaldehyde 
www.longshengdyes.com - 2009-02-12
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Hangzhou Ray Concrete Admixture Inc. is one of Concrete Admixture supplier located in Hangzhou China.
air-entraining admixture  pumping aid for concrete 
www.ray-cr.com - 2009-02-09
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