It originated in Europe, the regular insulation is PA66, there are two kinds of its production methods: hardtop method and tractionmethod.
它起源于欧洲，目前正规的隔热条是PA66，它的生产方法有两种：硬顶法和牵引法。
2
The paper analyzes tractionmethod with strengthened belt. In practice, the author summarizes main points of hoisting principle and finds out the best approach.
分析了强力皮带起吊牵引的方法，通过实践发现起吊理念要点，结合实际情况推荐起吊最佳方法。
3
The hardtop method of tight structure, good appearance, but more "brittle" tractionmethod for the production of good toughness but poor appearance, the side process of depression.