JUNZHIJIA
JUNZHIJIA protective cases
JUNZHIJIA · PROFESSIONAL PROTECTIVE CASES

Rugged Protection for What Matters Most

JUNZHIJIA hard cases — IP67 waterproof, dustproof and impact-resistant. Factory-direct OEM/ODM, wholesale and global supply from Zhongshan, China.

WHY JUNZHIJIA

Engineered Where It Counts

IP67 Rated Protection

Waterproof, dustproof and impact-resistant; drop-tested per MIL-STD-810H.

One-Piece Molding

Engineering PP / ABS with reinforced rib structure for long service life.

One-Stop Customization

Logo printing, custom foam inserts, colors and sizes on request.

Global Supply

Exported to 20+ countries across Europe, America, Japan, Korea and the Middle East.

150+
Product Models
18,000㎡
Factory Area
80+
Machines
20+
Countries Served
JUNZHIJIA factory
ABOUT US

Protection With Purpose

Zhongshan Junzhijia Plastic Products Co., Ltd. is a manufacturing enterprise integrating product design, injection molding, tooling, logo printing and custom foam inserts, delivering one-stop protective case solutions worldwide.

  • ISO9001, RoHS and IP67 certified
  • 20+ patents; quality meets demanding professional use
  • Wholesale, distribution, OEM and global supply
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BOXNOW

Latest Articles

Waterproof plastic box electrical: four numbers, three lines
2026-10-25

Waterproof plastic box electrical: four numbers, three lines

Acceptance of a waterproof plastic box electrical enclosure comes down to four numbers and three locations: wall thickness, gasket compression, latch retention and insert pull-out, then the lid…

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Waterproof box electrical: MIL-STD-810H and IEC 60529 acceptance
2026-10-25

Waterproof box electrical: MIL-STD-810H and IEC 60529 acceptance

Accepting a waterproof box electrical enclosure means naming clauses, not grades. IEC 60529 clause 14 fixes how IP tests run, MIL-STD-810H 506.6 and 512.6 fix rain and immersion, and latch torque…

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Waterproof box with lid: a 6 yuan gasket, 3,200 yuan of rework
2026-10-25

Waterproof box with lid: a 6 yuan gasket, 3,200 yuan of rework

On a 600 mm waterproof box with lid the gasket costs 6 yuan, the latches 9 yuan, the air test 3 yuan, under a tenth of the ex-works price. One 240-piece lot sent back costs 3,200 yuan and 14 days.…

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Waterproof box storage: acceptance tests for a humid warehouse
2026-10-25

Waterproof box storage: acceptance tests for a humid warehouse

At 95% RH, stacked four high for six months, waterproof box storage is accepted on five numbers: 25% to 30% compression, 350 N per latch, 66 kg with under 2 mm sag, a 30-minute spray…

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Water-Fill Tests Lie: Waterproof Plastic Storage Boxes Checks
2026-10-25

Water-Fill Tests Lie: Waterproof Plastic Storage Boxes Checks

Filling waterproof plastic storage boxes for three days proves very little. A 500 mm water column adds about 5 kPa inward, while stacking and temperature push 20 kPa the other way.…

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4 Latches, 30 Minutes: Waterproof Plastic Box With Lid Checks
2026-10-25

4 Latches, 30 Minutes: Waterproof Plastic Box With Lid Checks

Judge a waterproof plastic box with lid at the lid first. Flatness, groove depth and clamp force decide whether it leaks; spray and stacking only confirm.

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