description of industrial socket protection grade:

IP44, IP55, IP67 ip44: it can prevent the harm of water spraying in all directions and solids above 1mmm. Commonly used industries include automatic production equipment, packaging equipment, injection molding machine, stage lighting and sound, construction machinery, generator sets, distribution cabinets, etc.

IP55: it can prevent low-pressure water spray from all directions and prevent dust hazards. Common industries include: automobile cleaning equipment, spraying equipment, etc.

Ip67: it can prevent immersion below 15cm (soaking time 30 minutes) and completely prevent the impact of dust hazards. Common industries: mining machinery, outdoor sports ground power transmission and distribution equipment, etc.