2005 年，运用红外线自动对孔和无线远传模块相结合的技术，公司开发设计的“穿销对孔螺母装置”，解决了穿销对孔螺母的定值拧紧问题， 能够自动对准开口螺母，对孔准确率高，专利号：ZL 2006 2 0085087.8。

　　Chunlong Group developed Through-pin-Hole-aligning Nut Device and solved fixed-value tightening problem of this kind of nut, the technology of which integrates infrared automatic aligning and wireless communicating module. It can align to slit nut automatically with high precision rate. Patent No.: ZL 2006 2 0085087.8