The designing principles reflect the ideas of planning in advance, prevention as emphasis, key points control and constant innovation.
设计理念体现了事先策划、重在预防，控制关键、持续改进。
The designing principles reflect the ideas of planning in advance, prevention as emphasis, key points control and constant innovation.
设计理念体现了事先策划、重在预防，控制关键、持续改进。
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