copyright is possessed by chang bai hill double star limited liability company 

tel :(+86)439-8223951     (+86)439-8237578   fax: (+86)439-8235530

 tel :(+86)435-3296566      (+86)435-3296577   fax: (+86)435-3296588 

address: green river road 23. chang bai town ,chang bai county , ji lin province.