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Standards Mostofwhatwecallstandardsarevoluntarystandards,createdbyindustrygroupstoinsureproductcompatibility.Theyarenotcodesoractuallawsthatyoumustfollowtobeincompliancewithlocalordinances. Standardsli...Time：[2015-11-22]
- Basics of fiber optic cable(70 Read Time)
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