Grand Wood-Based Industry Co.,Ltd is the undertaker of a key environment-friendly industrial project invested by Grand Group,it is the first large scale manu-facturer in China of hollow-drilled door cores,it is a member of the Wooden Door Sub-committee of China Timber Distribution Association, it has up-to-date in China and self-IPR-onwed PIC extruding production lines for hollow drilled door cores, Its annual output capacity reaches 100,000 square meters,and the volume is continuously rising.