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HE BEI RONGYI COMMUNICATION COMPANY LTD

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ry155/622 sdh optical transmission equipment
ry155/622 sdh optical transmission equipment
Specification: RY 155/622 SDH
Detail: SDH optical transmission equipment is designed by Rongyi Communication Co***ny based on the latest suggestion of ITU-T and the technique specification of SDH in our country. The transmission rate ranges from STM-1 to STM-4.STM...
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