On December 22, 2021, the manufacturer of the absorption and reflection composite filter: ZJSJ Optoelectronics Technology Corporation stated that the prisms of the periscope lens developed by the company have been delivered to customers in batches.
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On December 22, 2021, the manufacturer of the absorption and reflection composite filter: ZJSJ Optoelectronics Technology Corporation stated that the prisms of the periscope lens developed by the company have been delivered to customers in batches.