Craft card:In the light in the center establish the craft instruction card all the way, adopt H type aluminum to lead track creation, each one arrange a piece of A4 transparent document bag.
工艺卡：在灯架中间设一路工艺指导卡架，采用H型铝导轨制作，每工位布置一块A4透明文件袋。
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Second, it has a triple strand DNA architecture generated by the synthesis of a short piece of the H strand which is highly sensitive to oxidative damage due to its single strand condition.
A serials of problems of miss position of roll, easy damage of guide and guard, scuff mark of piece were common during oval piece entering round pass by 2-h horizontal mill.