This 9 inch handheld hard case from Ningbo Weishuo is not simply an enlarged size, but an innovative design based on the actual pain points of industrial users. This product aims to solve two core problems: Firstly, the difficulty in opening the container due to air pressure differences during frequent travel and transportation; The second is the erosion of the box material by common oil stains and solvents in the workshop. Therefore, what we produce is not only a container, but also a systematic protection solution that includes pressure management functions and enhanced materials, directly serving industrial customers with strict requirements.
| External dimensions: | 230 * 191 * 104 mm (9.1 '* 7.5' * 4.1 ') |
| Internal dimensions: | 210 * 145 * 92 mm (8.3 '* 5.7' * 3.6 ') |
| Lid depth: | 17 mm (0.67 ') |
| Box depth: | 75 mm (2.95 ') |
| Material: | Engineering-grade PP plastic |
| Protection Class: | IP67 (Waterproof and Dustproof) |
| Color: | Standard black, customizable colors available |
Standard air pressure balance valve: This is the signature feature of this model. After air transportation or altitude changes, a completely sealed box will create negative pressure inside, making it extremely difficult to open and even damaging the lock buckle. Our 9 inch handheld hard case is equipped with a pressure balancing valve that can adjust the pressure difference between the inside and outside, ensuring that your equipment can be easily accessed immediately no matter where it is shipped worldwide, ensuring operational efficiency.
Enhanced Chemical Corrosion Resistant Material: We have specially selected a higher quality material formula for the 9 inch handheld hard case, giving PP material excellent resistance to grease, weak acid and alkali, and some solvents. This means that when used in repair workshops, laboratories, or chemical plants, the surface of the box can resist the splashing of common chemicals, is not easily penetrated or brittle, and has a much longer service life than ordinary plastic boxes, greatly reducing your long-term procurement and replacement costs.
Process guarantee: The box of this model is formed using high-precision molds and stable injection molding processes to ensure absolute sealing of the pressure balance valve installation position, which is the basis for effective valve function. We conduct incoming inspections on each batch of raw materials to ensure that their chemical resistance meets the formula standards.
Verification testing: In addition to the standard IP67 waterproof and dustproof testing, we will conduct simulated chemical environment testing on finished product samples (such as oil immersion, salt spray), and repeatedly perform opening and closing tests under high and low temperature cycles to verify the long-term reliability of valves and materials under extreme conditions.
Deep comparison of functional value
| Dimension | Ordinary hard case | 9 inch handheld hard case |
| Air pressure adaptability | Without processing, a vacuum may form after transportation, making it difficult to open. | Standard pressure balancing valve, adjustable according to air pressure |
| Environmental tolerance | It only has basic waterproof and dustproof properties, and is prone to aging and discoloration when exposed to chemicals. | Enhance chemical corrosion resistance, withstand workshop oil stains and solvents, easy to clean, and have a more durable appearance and performance. |
| Long term holding cost | The unit price may be slightly lower, but it is vulnerable and requires frequent replacement due to environmental aging. | Initial investment brings longer service life and stable performance, lower total holding cost, and higher return on investment. |
Valve maintenance: The valve is designed to be maintenance free, but sharp objects should be avoided from piercing its internal waterproof and breathable membrane. After long-term use in extremely dusty environments, a soft bristled brush can be used to gently sweep the outside of the valve.
Chemical contact post-treatment: If encountering a large amount of unknown chemical spills, it is recommended to wear gloves and rinse thoroughly with water as soon as possible and wipe dry thoroughly. Although it has resistance, rapid processing can ensure maximum safety and cleanliness.
Q1: Will the pressure balance valve affect the waterproof performance of the box?
A1: Absolutely not. The valve we use is a professional waterproof and breathable valve, which can completely block liquid water and water vapor, ensuring that it meets the IP67 waterproof standard while achieving air pressure balance function.
Q2: What substances can the so-called "chemical corrosion resistance" specifically resist?
A2: Our reinforced PP material has been tested and has good resistance to common engine oils, lubricants, hydraulic oils, silicone grease, alcohol, diluted acid and alkali cleaners, etc. It can prevent the surface of the box from being penetrated, softened, cracked or causing serious discoloration by these substances. But for extreme chemicals such as strong oxidizing acids and specific organic solvents, it is recommended to conduct compatibility testing or consult our technical team.
Q3: What are the advantages of engineering PP plastic material compared to ordinary plastic?
A3: Engineering PP plastic has higher hardness, better impact resistance, and toughness, and its performance is more stable at high and low temperatures, making it less prone to deformation or brittle cracking. The high-quality PP material selected by Ningbo Weishuo ensures that this box can better protect its contents when subjected to impact or compression, and its service life far exceeds that of ordinary plastic boxes.
Address
Building 6,300# Chuanghui Road,Zhongnan Hi-Tech Binhai Industrial Zoo, Ninghai, Ningbo, Zhejiang, China
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