Shanghai Sheyuan Network Technology Co., Ltd.

Latest Release

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  TX Journeyman Calc: NEC Exam

  2026 NEC calculation practice

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Bundles

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  Boat & Marine Calculators

  Utilities

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  Electrical Field Calculators

  Utilities

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  Framing & Finish Calculators

  Utilities

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  HVAC Field Calculators

  Utilities

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  Rigging & Lifting Calculators

  Utilities

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  Sitework & Grading Calcs

  Utilities

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iPad & iPhone

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  TX Journeyman Calc: NEC Exam

  2026 NEC calculation practice

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  Welding Sheet Metal Calculator

  Bend, Flat Pattern & Fab Math

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  FE Civil Exam Prep

  FE Exam Practice · Mock Exams

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  EPA 609 Certification Prep

  MVAC Practice Test & Reference

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  EPA 608 Certification Prep

  HVAC Practice Test & Flashcard

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  Boat Calculator: Marine Engine

  Hull Speed, Anchor Rode, Prop

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  HVAC Calculator: Load & Charge

  Superheat, Manual J & Subcool

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  Oilfield Calculator: Drilling

  Blast, Mud Weight & Hookload

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  AccessDoor Count

  Access Control Door Count

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  ATS Load Transfer

  Transfer Switch Load Calc

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  BollardSpacing Calc

  Anti-Ram Bollard Spacing

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