1: The use of double glass bonding has good high temperature resistance 2: specific high stability and good high temperature resistance

1: The use of double glass bonding has good high temperature resistance 2: specific high stability and good high temperature resistance

1: The use of double glass bonding has good high temperature resistance 2: specific high stability and good high temperature resistance

1: The focusing structure is not limited by distance 2: clear and bright lines, no stray light 3: Stable and reliable, can work for a long time

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