i15,i20—Signify the transmission ratio of movement's shaft gear which is xx.
L—Signify the length of needle pivot (which means shaft gear).
e—Signify the length of needle pivot over the splint
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fax: +86 - 571 - 88730677
E-mail: sales@shunhao.net
add: NO.8,4th road Changkou dist,
Fuyang,hangzhou
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