This article analyzes three core risk points in water electret equipment import, compares costs between self-operation and professional agency, provides 2025 latest tariff policy interpretation, and includes complete operational guide for professional agency services.equipment. For example, Indonesia has the SNI certification, Thailand has the TISI certification, and the Philippines has the BPS certification. It is necessary to confirm in advance the equipment voltage (such as 380V/50Hz in Thailand), the compatibility of the CE certification, and the proof of environmentally friendly materials.Special characteristics of

water electretAs core components of medical purification systems, water electret devices (Water Electret Device) have significant technical barriers for import. According to the 2025 revised Medical Device Import Supervision Regulations, such equipment must meet dual standards ofMedical EquipmentISO 13485andquality management certificationand CE IVD in vitro diagnostic device directive

• . Special attention should be paid to HS code classification during import declaration. Current classifications:
• Industrial electret equipment: 8543.70.9000 (7% tariff)

Medical-grade water electret equipment: 9018.90.6000 (5% tariff + 13% VAT)

Three major risks of self-import

• Missing technical documents
  • According to General Administration of Customs statistics for first half of 2025, abnormal declaration rate for self-clearance of water electret equipment reaches 38%, mainly concentrated in:
  • Failure to provide original manufacturers Material Safety Data Sheet (MSDS)
• Expired version of Electromagnetic Compatibility report (EMC)
  • Logistics configuration errors
  • Equipment damage due to non-use of anti-static packaging
• Temperature deviation exceeding ±2℃ in temperature-controlled containers
  • Compliance risks
  • Failure to complete medical device registration (especially involving FDA 510(k) certification)

Full Process Breakdown of Professional Agency Services

Mismatch between import license and equipment parameters

• Standard operating procedures for quality agency services include six key phases:
  • Equipment parameter compliance pre-review
  • Preliminary technical assessment (3-5 working days)
• Matching applicable tariff preferential policies
  • Document preparation phase (7-10 working days)
  • Agency service for medical device import filing certificate
• International transportation management (depending on transportation mode)
  • Professional anti-vibration packaging solution design
  • Real-time temperature and humidity monitoring system configuration

Cost comparison: Self-operation VS Professional agency

Comparative analysis using a $500,000 equipment import as example:

• Time Cost
  • Self-operation: Average processing time 68 days
  • Professional agency: Controlled cycle within 45 days
• Cost of funds
  • Port demurrage difference: Self-operation averages $12,000
  • Tariff benefits: Professional agencies can save 3-5% comprehensive tax rate
• Hidden Costs
  • Technical rectification costs reduced by 80%
  • Insurance claim success rate increased to 95%

Key policy change highlights for 2025

Latest regulatory requirements for hydrocharging equipment imports:

• Newly addedNanomaterial safety assessment reportSubmission requirements
• Import license validity period shortened from 3 years to 2 years
• New customs inspection items addedElectret charge density testingProject

Recommended focus areas for importersCharge decay rateAccording to new regulations, medical-grade equipment decay rate must be ≤5%/year (previous standard ≤8%/year), industrial-grade equipment ≤12%/year. Professional agencies can provide pre-testing services to avoid additional costs from post-arrival technical rectification.