Refractorycements, mortars, concretes and similar compositions, other than products of heading No. 38.01.
耐火的水泥、灰泥、混凝土及类似耐火混合制品，但税目38.01的产品除外。
2
This paper analyzes the problems of GD170 cements with high aluminum refractory castable and expounds the development and use result of the new phosphate with high aluminum refractory castable.