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Title Standard No. Implemented On
Extruded Flaring-free Ductpreassembled DeviceHB 7522-19971997-10-1
Numbering System of Standard Technological Equipment - Numbering Method for Ordinary Technological Equipment QJ 993.2-19881988-10-1
Numbering System of Standard Technological Equipment - Numbering Method for Combined Technological Equipment QJ 993.1-19861985-6-1
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