waterproof students backpack wholesale for students

students backpack description

This product is of fine workmanship. The edge banding is fine and smooth with excellent hand feeling, and the line of symmetry is straight. It is designed to give the utmost safety to people's belongings

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students backpack SPECIFICATIONS

The product is intended both for everyday and business use. Constructed out of dirt-proof materials, the product is easy to clean. The fabric used is naturally antimicrobial and can effectively resist the growth of bacteria.

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The design of Sofie students backpack is a complex process. From 3D modeling, stress on parts, to construction, every detail is well taken care of. Having passed over a 48-hour salt spray test, it is 100% corrosion resistant

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Sofie waterproof school bag goes through a professional design process. It is designed considering mechanical structure, control system, the performance of components and parts, etc. The product has popular features which include fire resistance

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Sofie waterproof school bag is well designed. Its design covers panel design, program design including PLC, drive systems, operator interface design, control systems design, etc. The product is available in different dimensions

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The design of Sofie students backpack is strictly carried out. It is handled by our designers who consider many factors such as part tolerances, mechanical analysis, fatigue analysis, function realization, etc. It conforms to the standards of America, Japan, Germany, etc

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Sofie waterproof school bag undergoes different types of specific mechanical tests. They include creep and stress relaxation testing, drop or shock testing, fatigue testing, and impact toughness testing. It has a strong ability to resist salt, acid, alkali, grease, etc

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This product is chemically resistant. The use of neutral materials greatly avoids changes in the quality characteristics of the product itself due to the surrounding chemical environment. It can withstand the high temperature and low temperature as well

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