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2002     Our company started in the name of “San Sheng”                                

2005   We gained Green Building Material certificate with good reputation in the market.We started to bid government projects.                                                     

2006    We registered “Sansan” Brand”                                                                           

2006   We gained ISO9001-2000 certificate,meanwhile,we gained “Concrete Admixture Famous Brand Top Ten” in China.                                                                                

2010  Tongzhou Chemical Technology Co. Ltd. was founded.We started to look for global valuable partners.