Hangzhou Shunhao Metalwork Co., Ltd.
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
φ50 front electronic number back entry
Y41 Bottom entry exter-rotating with plastic surface
Y100 Bottom entry with explosion-proof big hole
Y60 two-body roll type bottom entry YN-60
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