Some spring fracture cause is mainly instability of spring steel quality, and the arts and crafts on heat treatment of steel material matching spring product is necessary to be perfected.
个别弹簧出现折断质量问题，主要原因是弹簧钢材质不够稳定，材料与产品的热处理工艺匹配不够完善。
In this paper, we had studied the arts and crafts and mechanism of the laser cleaning, and made better purpose in laser cutting of different non-cleaned material using it.
本文对激光清洗技术的工艺及机理进行了研究，并将其应用到激光切割的过程之中，对不同的非洁净表面清除效果均很好。
Qidong Huamei Culture Article CO. , LTD was established in 1984, which is a professional manufacture of arts and crafts pictures and sculpture material.
启东市华美文化用品有限公司创立于1984年，是一家专业生产工艺美术画、刻资料用品的企业。
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