Further increase product variety varieties, improving product curing nature, and are active in the development of heteromorphosis boards to meet market needs more tune.

对现有小规模异型企业要进行改造，提高规模和品质量。研究开发塑料，以适应各种建筑需要。

The problems existed in extrusion process of two sorts large section hollow extrusion profilesare introduced. The concrete measure and extrusion consequence of the improved prothole die are given.

介绍了两种大断面空心型在挤压过程中在问题，阐述了改进挤压模具具体措施和时挤压结果.

Profile is poriferous cavity, advocate the liner steel that there is Lengza armor plate to be made inside antrum, in order to increases the strength of window of model steel door.

型为多孔空腔，主腔内有冷扎钢板制成内衬钢，用以提高塑钢强度。

As a new kind of material, composite has the advantage of designable, the designable parameters include the type of the fiber and matrix, the percent of the volume, the direction of the laminate, etc.

复合料作为一种具有复杂结构新型料，其主要优点和特点在于其内部结构可设计性。