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Search results for: 'Explain the difference between "hard" and "soft" water and how it is measured.'

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  1. JJS511 High-quality Thick Aluminum Alloy Multi-function Ladder Engineering Ladder Portable Household
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    JJS511 High-quality Thick Aluminum Alloy Multi-fun... SKU : 32901327815
    Special Price US$62.27 Regular Price US$69.19
    Out of stock
  2. Smart Opening-Closing Motor (WS-CM1)
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    Smart Opening-Closing Motor (WS-CM1) SKU : WS-CM1
    Special Price US$127.56 Regular Price US$141.74
  3. 2.4G Student electronic tag 0-100 meters active card Read only card High frequency
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    2.4G Student electronic tag 0-100 meters active ca... SKU : YKD-PA08
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  4. Panic Bar Lock for Fire door escape exit stainless Press-Down Type
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    Panic Bar Lock for Fire door escape exit stainless... SKU : GMT200
    Special Price US$26.85 Regular Price US$29.83
  5. 86 Box Low Price RFID Card Biometricstandalone Fingerprint Device for Office Bank School Hospital
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    86 Box Low Price RFID Card Biometricstandalone Fin... SKU : TEST-AC1
    Special Price US$14.52 Regular Price US$16.13
  6. RFID UHF Circular Polarized Flat Plate Plane Antenna 5dBi 8dBi
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    RFID UHF Circular Polarized Flat Plate Plane Anten... SKU : UHF5DBFLAT
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    Out of stock
  7. Model:SP-766H4DVR+VS-8275H-SFS-CUT*3
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    Model:SP-766H4DVR+VS-8275H-SFS-CUT*3 SKU : VS-766H4DVR20123-64G
    Special Price US$500.92 Regular Price US$556.57
  8. 7 Inch Access Housing Facial Terminal Wall Clocks for Company Management Employee Remote Control Simple Operation Attendance
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    7 Inch Access Housing Facial Terminal Wall Clocks ... SKU : WCAM101119340514
    Special Price US$142.60 Regular Price US$158.45
  9. Control Attendance System Biometric Recording Face Recongition Moving 7 Inches Facial Recognition Office Management Device
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    Control Attendance System Biometric Recording Face... SKU : WCAM101119340513
    Special Price US$142.60 Regular Price US$158.45
  10. Super Wide Dynamic Face Recognition Turnstile Gate Terminal with IP Camera
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    Super Wide Dynamic Face Recognition Turnstile Gate... SKU : WCAM101119340512
    Special Price US$142.60 Regular Price US$158.45
  11. Facial Recognition Camera Attendance Systems Gate Turnstile Terminal
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    Facial Recognition Camera Attendance Systems Gate ... SKU : WCAM101119340511
    Special Price US$142.60 Regular Price US$158.45
  12. Security System Access Control Face Recognition Terminal
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    Security System Access Control Face Recognition Te... SKU : WCAM101119340510
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  13. Intelligent Face Recognition Access Control for Attendance
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    Intelligent Face Recognition Access Control for At... SKU : WCAM101119340509
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  14. Biometric Attendance System Facial Recognition Terminal
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    Biometric Attendance System Facial Recognition Ter... SKU : WCAM101119340508
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  15. Based on Linux Face Recognition System Access Control Terminal
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    Based on Linux Face Recognition System Access Cont... SKU : WCAM101119340507
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  16. CCTV System Face Recognition Machine Terminal for Turnstile
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    CCTV System Face Recognition Machine Terminal for ... SKU : WCAM101119340506
    Special Price US$142.60 Regular Price US$158.45
  17. Turnstile Terminal Access Control Face Recognition System Device
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    Turnstile Terminal Access Control Face Recognition... SKU : WCAM101119340505
    Special Price US$142.60 Regular Price US$158.45
  18. Linux System Access Control Facial Recognition System Terminal for Turstile Gate
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    Linux System Access Control Facial Recognition Sys... SKU : WCAM101119340504
    Special Price US$142.60 Regular Price US$158.45
  19. ODM Custom Smart Security Facial Device Biometric Face Recognition Terminal for Wing Gate in Cbd Attendance Machine SIM Card
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    ODM Custom Smart Security Facial Device Biometric ... SKU : WCAM101119340501
    Special Price US$142.60 Regular Price US$158.45
  20. Face Recognition Terminal for Turnstile Access Control Systems
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    Face Recognition Terminal for Turnstile Access Con... SKU : WCAM101119340500
    Special Price US$142.60 Regular Price US$158.45
  21. Shenzhen Manufacturer 7inch Screen Face Recognition Attendance Machine
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    Shenzhen Manufacturer 7inch Screen Face Recognitio... SKU : WCAM101119340499
    Special Price US$145.01 Regular Price US$161.12
  22. Human Body Detection Security Time Attendance System Face Recognizer Access Control Terminal
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    Human Body Detection Security Time Attendance Syst... SKU : WCAM101119340498
    Special Price US$152.41 Regular Price US$169.34
  23. Intelligent Door Access System Smart Security Devices Facial Time Recognition Face Rcognition Attendance Terminal
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    Intelligent Door Access System Smart Security Devi... SKU : WCAM101119340495
    Special Price US$142.60 Regular Price US$158.45
  24. Scan Management Employees Facial Card Recording Recorder Dynamic Face Recognition Time Biometric Clocking in Machine
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    Scan Management Employees Facial Card Recording Re... SKU : WCAM101119340494
    Special Price US$142.60 Regular Price US$158.45
  25. Capacity Biometric Facial Bio Smart Card Reader Automatic School Bell Face Recognition Authentication Adms Time Attendance
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    Capacity Biometric Facial Bio Smart Card Reader Au... SKU : WCAM101119340492
    Special Price US$142.60 Regular Price US$158.45
  26. Facial Device TCP IP Wiegand Door Card Face Tracking Camera Time Attendance Battery RFID Access Control System with Attendance
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    Facial Device TCP IP Wiegand Door Card Face Tracki... SKU : WCAM101119340490
    Special Price US$142.60 Regular Price US$158.45
  27. 7 Inch Screen RFID Card Time Attendance Access Control Face Recognition Device Biometric Terminal
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    7 Inch Screen RFID Card Time Attendance Access Con... SKU : WCAM101119340488
    Special Price US$142.60 Regular Price US$158.45
  28. Face Recognition Door Lock Attendance System Turnstile Face Recognition Terminal
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    Face Recognition Door Lock Attendance System Turns... SKU : WCAM101119340487
    Special Price US$142.60 Regular Price US$158.45
  29. Dual Camera Smart 3D Fast Speed Scanning Face Recognition Turnstile Device System
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    Dual Camera Smart 3D Fast Speed Scanning Face Reco... SKU : WCAM101119340486
    Special Price US$142.60 Regular Price US$158.45
  30. Sdk Provided for Integration Face Recognition Biometric Access Reader
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    Sdk Provided for Integration Face Recognition Biom... SKU : WCAM101119340483
    Special Price US$142.60 Regular Price US$158.45
  31. Hi3516D V300 Chip Set 7 Inch 2 Cameras Time Attendant Facial Reader
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    Hi3516D V300 Chip Set 7 Inch 2 Cameras Time Attend... SKU : WCAM101119340482
    Special Price US$142.60 Regular Price US$158.45
  32. Recognition Accuracy 99% Time Attendance Management System Facial Recognition Scanner
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    Recognition Accuracy 99% Time Attendance Managemen... SKU : WCAM101119340481
    Special Price US$142.60 Regular Price US$158.45
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