Which of the following description of network product warning issued, obtain and process? (Select 3 Answers)
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warning information of product release in huawei's website - > service announcement - > warning notice
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product warning need engineers active learning, for the key issues that need to be tracking management, according to advice of early warning, make active treatment
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according to the emergency degree of product early warning, arrange rectification or the plan of upgrade, guard actively to the key problem
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early warning information need 400 hotline engineers to pay more attention, office engineers can don't pay any attention
