20t 6m Single/Double Speed Electrical Chain Hoist for Overhead Crane

20t 6m Single/Double Speed Electrical Chain Hoist for Overhead Crane. Lightweight Aluminum Shell: Made of light but hard aluminum shell with special cooling fins for 40% faster heat dissipation. Electromagnetic Brake Safety: Unique brake design operates immediately when power cuts off to ensure safety. Anti-Pull Heat-Treated Steel: Hook constructed of anti-pull and heat-treated steel meeting required safety standards. 360-Degree Rotation Hook: Lower hook can turn 360 degrees with a safety tongue piece to guarantee operation safety. Sturdy Support Frame: Loading support frame consists of two extremely sturdy steel plates. Leakage Protection Transformer: 24V/36V transformer device prohibits unexpected accidents caused by electric leakage. Integral Enclosed Structure: Applicable for harsh places like chemical plants and electroplate factories. CE and ISO9001 Certified: Product holds CE and ISO9001:2000 certifications for quality assurance.