... more narrow fractions.According to the need,it can change the molecular weight of the end product, accordingly ... CO and H2 synthesis, no pollution and smell, can directly used contact with the food in the hot ... wax is low viscosity in high temperature,it can improve the liquidity of hot melt adhesive,enhance ... hot melt adhesive.4.It has small penetration,can improve the strength of the hot melt adhesive5. ...