GS硬度计-指针式:GS-706N,GS-709N,GS-719N,GS-720N,GS719G,GS-721N,GS-721G,
GS-719H,GS-720H,GS-702N,GS-720G,GS-709G,GS-750G,GS-751G,GS-752G,GS-753G,
GS-754G,GS-743G,GS-744G,GS-756G
数显式:GSD-719S,GSD-720S,GSD-721S,GSD-701S,GSD-706S,GSD-743S,GSD-744S,GSD-751S,GSD-754S
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