SIGMOID TRADING LTD is one of the leading companies in producing and exporting clean energy products. We aim to the environmentally friendly products so we mainly produce the goods from agricultural and industrial waste. We are exporting Wood pellets, Wood chips, Wood R.U.F, Rice husk powder, Rice husk grind, Rice Husk Briquette, Rice husk pellets, Rice husk ash, Sawdust,... to Worldwide. Our strength lies in efficiency and promptness of services as well as in effectiveness of facilities whereby customers worldwide are assured of complete reliability. Moreover, we can also make suggestions based on the buyers expected use.