注意：be careful:
1.更换时请注意现场环境，建议拆掉在办公室等相对环境较好的地方更换
Please pay attention to the on-site environment during replacement. It is recommended to remove it and replace it in a relatively good environment such as the office
2.安装时轻拿轻放，注意安装时的水平放置
Handle with care during installation, and pay attention to the horizontal placement during installation
3.务必清理枪体外部
Be sure to clean the exterior of the gun body
反射镜的安装
原厂镜片带支架一体，方便更换，请勿自行使用胶水粘镜片
The original lens is integrated with a bracket for easy replacement. Do not use glue to glue the lens yourself
准直镜片的安装
务必清理枪体外部
Be sure to clean the exterior of the gun body
保护镜片的安装
保护镜密封圈规格为：15*21*2.7
Specification of protective mirror sealing ring: 15 * 21 * 2.7
默认的保护镜规格为：D18*T2
The default protective mirror specification is: D18 * T2
聚焦镜片的安装
聚焦镜密封圈为：15*21*2.7
Focusing mirror sealing ring: 15 * 21 * 2.7
默认的聚焦镜规格为：（焊接）D20*4.5 F150 （四合一清洗）D20*3.5 F400
The default focus lens specification is: (welding) D20 * 4.5 F150 (three-in-one cleaning) D20 * 3.5 F400