This is Aling from XIANGTAN SWALLOW CHEMICALS.,LTD (China).
we are a comprehensive chemical enterprise which integrates the scientific and technological development, production, sale and service.
We produce and sell are inorganic chemicals, including zinc sulphate/ zinc carbonate/zinc oxide .widely used in used in painting & coating industry / cosmetic grade /rubber industry / feed grade / additive industry and etc...
For more details you can visit our web and video,
http://www.swallow-chemicals.com/English/ aling@swallow-chemicals.com