4 for a fire door core board .

用于防火门芯板。

Core board :poplar, Holt, Liu An, cloning of wood.

芯板：杨木，杂木，柳桉，克隆木等。

Paraclete core board can be board, plywood, horniness beaverboard, plastic board, glass.

辩护人芯板可为木板、胶合板、硬质纤维板、塑料板、玻璃等。

Housrey special type fire door core board (perlite) Mainly applied to wooden fire door, steel fire door in the fire fill material;

防火门专用豪仕莱特芯板（珍珠岩）主要适用于木质防火门、钢质防火门的防火填充材料；

The produced EPS beads may be used as sandwiched core board, float, thermal insulation and packaging according to their quality grades.

制得的EPS按废料质量的好坏，可分别用作夹芯板，浮标，保温及包装材料等。