A study of the deresin process of Slah pine (Pinus elliottii Englm) is carried out by taking samples from Taoling Forest Farm, Miluo City and selecting proper chemical agents. Some factors influencing the deresin conditions such as concentration, temperature, processing time are analyzed. An optimal condition is acquired through orthogonal tests; it is: concentration 1%, temperature 120℃, and reaction time 3 h. Under this condition, the result is good and there is no resin penetrating out through the su...