Tank Storage Solutions

Retractable Grounding Reel for Floating Roof Tanks

The Retractable Grounding Reel (RGR) is designed to discharge the static electricity of the floating roof tanks, according to API Recommended Practice 545. It is used as the direct electrical connection between the floating roof and tank shell. The lightning current and bound charge will be effectively and rapidly conducted to the earth when lightning happens.

Compared with any conventional bypass conductor, it is more effective in decreasing the possibility of lightning-induced fire, hence achieving higher safe and reliability performance.


  • Corrosion Resistance, the housing is constructed from 316L stainless steel
  • Stainless-steel spring is more corrosion resistant than steel spring
  • SS304 braided layer out of the tinned braided copper providing high corrosion & wear resistance
  • Length option – 20m or 24.4m
  • Competitive Pricing – a cost saving enhancement to floating roof grounding

Personal Electrostatic Eliminating Pole

RED for stop and GREEN for go Under certain conditions, a person’s body can be electrostatically charged by friction and natural environmental conditions. The Personal Electrostatic Eliminating Pole is designed to prevent the accumulation and accidental discharge of static electricity from a person’s body.

Trucking Loading Skid Accessories

Wonder® Engineering Technologies also provide many cost-effective equipments required to complete the truck loading bay, including but not limited to:

  • Overfill Probes
  • Grounding Monitors
  • Grounding Clamps
  • Loading Arms
  • Deadman Switches

Explosion Proof LED Lightings

Carefully choosing our partners, Wonder Engineering keep stock and supply cost-effective Explosion Proof LED lightings to suit different lighting applications in the Oil & Gas industry.

Our solution:

  • Competitive cost
  • Local stocks
  • Replaceable component parts – lowering maintenance costs
  • Engineering design with LUX calculations [LUX-LUMENS-WATTS]
  • Satisfaction guaranteed
  • Specifications:

    • Voltage: -15KV to +15KV
    • Alarm Voltage: >150V
    • Height: 1m (3.28ft)
    • Certification: ExiaIICT4 Ga


    Features & Benefits:

    • Handle: Constructed of electrostatic conductive materials
    • Static electricity from a person’s body will be continuously discharged without any spark or discomfort
    • Provides constant monitoring with audible and visible alarms
    • Audible voice warning when people are approaching
    • OLED Display indicates the resistance value
    • Interlock signal output
  • Applicable Standards & Certifications of our LED lightings:

    • ATEX
    • CNEX
    • UL & CUL
    • DLC
    • SAA & C-TICK
    • CQC
    • CE & ROHS
    • IP68
    • ISO 9001
    • ISO 14001