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Sheheng Jann Industry Corp was established in Taiwan in 1980, specializing in manufacturing various measuring tools, and accessories in Taiwan and China.
HOL is our own brand and has extensive OEM/ODM experience, and has been successfully exported to more than ten countries. we guarantee the quality of our products.If you are interested in our products, please feel free to contact us.

  • Half-Round Protractor

    ►Surface treatment : polished finish
    ►Process of scale : acid etched
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  • Rivet Protractor

    ►Surface treatment : polished finish
    ►Process of scale : acid etched
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  • Particular Protractor

    ►Surface treatment : polished finish
    ►Process of scale : acid etched
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  • Twin-Handle Protractor

    ►Surface treatment : polished finish
    ►Process of scale : acid etched
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  • Lengthen Twin-Handle Protractor

    ►Surface treatment : Polished finish
    ►Process of scale : acid etched
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  • Multi-Purpose Protractor(S)

    ►Material : #420J2 stainless steel
    ►Surface treatment : polish finished
    ►Process of scal...
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  • Multi-Purpose Protractor(M)

    ►Material : #420J2 stainless steel
    ►Surface treatment : polish finished
    ►Process of scal...
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  • Multi-Purpose Protractor(L)

    ►Material : #420J2 stainless steel
    ►Surface treatment : polish finished
    ►Process of scal...
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  • Aluminum Ruler

    ►Surface treatment : anodized finish
    ►Process of scale : screen printing
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  • Aluminum Ruler(Grooves type)

    ►Grooves type
    ►Surface treatment : anodized finish
    ►Process of scale : screen printing
    ...
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  • Aluminum Ruler(Tilting type)

    ►Double tilting type
    ►Surface treatment : anodized finish
    ►Process of scale : screen pri...
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  • Ratio Scale Ruler

    ►Surface treatment : anodized finish
    ►Process of scale : screen printing
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