Hunan Zhengda can now proudly claim to be a leader in independently developed first class products such as pulp machines, closed hood paper machines and air ventilation, Yankee hoods and air ventilation, coaters and hot air drying systems of coaters, closed hood exhaust heat recovery systems and paper mill building ventilation systems. Hunan Zhengda delivers a full set of turn-key services for Pulp Project, Reconstituted Tobacco Project that range from overall engineering, manufacture, transportation, installation and commissioning to after-sales service. please send mail to erichou2006 at 163 dot com ,thank