Dong a group Co. has been doing business since 1991, and official established in 1993. main objectives are: import export, representative office, in-stock trading, wholesale, retail trading. professional importer for more than 14 years. Our trading goods are materials that needed producing but domestic do not have, like: ...

  Light calcium carbonate also called Precipitate carbonate. It is made of high quality (limestone) as raw material. through calcine, digestion, carbonation, sedimentation,filtration, drying and crushing process become. The products characteristic whiteness, brightness, uniform distribution particles, ...

Mining and processing mineralsDistributing mining, geological equipmentsMake a business cooperation and joint ventureAll service regarding minerals and equipment in VietnamOther kinds of business