The repair and maintenance of all parts of this scanner head must be performed by Shenzhen Scanner Optics S&T CO., Ltd. Only Shenzhen Scanner Optics S&T CO., Ltd. has the correct test standards and correction system. The mirrors need to be regularly cleaned because the dirty mirrors would absorb the laser energy and interfere with the mirrors. Check the mirrors regularly, if they are dirty clean the laser galvo mirror as follows. Wearing a cotton glove, hold the edge of the mirrors, keep the optical emission surface face up and use clean compressed air to blow the mirrors to remove dust, dirt, etc. For storage, use, and service, please make sure: Storage temperature: -35°C to +60°C , Use temperature: 25°C ±10°C, Avoid damp or corrosion.