[Explanation Document] Registered the RoHS Directive and Non-Applicability Certificate for Stainless Steel Containers.

Is the stainless steel container related to the RoHS directive? I have summarized what a non-applicability certificate for stainless steel containers is.

"Are stainless steel containers related to the RoHS directive?" You may have heard the terms "RoHS directive" and "RoHS compliant products" at least once. We sometimes receive inquiries such as, "Are stainless steel containers compliant with the RoHS directive?" and "Is there a certificate available?" What exactly is the RoHS directive, and what relationship does it have with stainless steel containers? "What is a non-applicability certificate for stainless steel containers?" A non-applicability certificate is one of the documents submitted to customs when exporting industrial products overseas. It is not a document that is always required for export, but in many cases, it seems to be requested. Here, we have summarized the non-applicability certificate briefly.

• Stainless steel container

We have summarized two tests conducted at our company: the "penetrant testing" of stainless steel containers and the "pressure vessel inspection."

Our company conducts various inspections to maintain the quality of our products. Additionally, if requested by customers, we may perform inspections tailored to their preferences. Here, we will introduce the color check (penetrant testing) and the inspection of pressure vessels among the inspections of our stainless steel containers. However, what is written here represents only a portion of the inspections we conduct, and in reality, there are many other types as well. We hope this explanatory document will serve as a reference when considering stainless steel containers.

• Stainless steel container

This is an introduction to the identification management methods for stainless containers (stainless steel products) conducted as part of quality control.

"Identification management" is one of the essential management practices in product manufacturing. In factories, identification management as part of quality control is likely implemented in various situations, such as with materials and manufacturing processes. While the management methods vary depending on the factory and product, it is necessary to choose the optimal identification method suited to the environment. Here, we will introduce the identification management methods for stainless containers (stainless steel products) used in various situations, including raw material storage, production lines, and integration into machinery.

• Stainless steel container

Stainless steel is a metal that is "difficult" to rust!

We sometimes receive inquiries from customers saying, "Even though it's made of stainless steel, it rusted quickly." Stainless steel, as the English words "Stain (rust, corrosion) + less (less) + steel (steel)" suggest, is an alloy of iron that is highly resistant to rust. While it is much less prone to rust compared to regular iron, it is not completely rust-proof. This PDF document summarizes "Why is stainless steel resistant to rust?", "What causes rust on rust-resistant stainless steel?", and "What are the rust prevention measures for stainless steel containers?" You can view it immediately by downloading the PDF.

• Stainless steel container

Do you know what the differences are between the faucet and the ball valve attached to the stainless steel container?

"What is the difference between a faucet and a ball valve used in stainless steel containers?" As convenient stainless steel containers for dispensing liquids, our company offers two types of products: containers with faucets and containers with ball valves. Both can dispense liquids in small portions like water servers or jugs, but we will introduce the differences between faucets and ball valves.

• Stainless steel container

Why does powder get clogged? An explanation of basic terms related to powder and methods to resolve powder clogs from the perspective of the container used for the powder!

What are the ways to resolve "powder clogging"? "Powder clogging" is a common issue when discharging powder from a container. It can lead to delays in discharge or even a complete stop, which may result in inconsistencies in product quality. But why does the powder discharge poorly (get clogged) in the first place? Here, we summarize the causes of powder clogging and the specifications of containers and peripheral equipment to resolve it.

• Stainless steel container

We have compiled stainless steel containers that are easy to clean and help prevent foreign matter contamination.

Have you ever experienced the following issues while using stainless steel containers? - Contents or dirt getting trapped in the rim of the container, making it impossible to remove. - Dirt accumulating on the handle, causing inconvenience. - Taking a long time to remove dirt or cleaning solution that has entered the gaps of the container during the cleaning process. When dirt or foreign substances get into the gaps of the container, they are difficult to remove. This not only prolongs the cleaning process but also the residual dirt or cleaning solution can lead to foreign matter contamination or cross-contamination. So, what kind of stainless steel containers can help reduce cleaning time?

• Stainless steel container

I have summarized the important cleaning methods to make stainless steel containers last longer.

After using a stainless steel container, it is essential to clean the container. However, incorrect cleaning methods can cause scratches or lead to rust. Here, we will introduce important cleaning methods to help prolong the life of stainless steel containers.

• Stainless steel container

BA material, 2B material, buff polishing, electrolytic polishing... A grand reveal of stainless steel surfaces that cannot be discerned by the naked eye!

Smooth, rough, silky... Depending on the material and surface finish, stainless steel shows various appearances. However, it is not possible to see what the actual surface looks like just by visual inspection. Therefore, this time, we will introduce photographs of stainless steel surfaces taken using a scanning electron microscope (SEM). *What is a scanning electron microscope (SEM)?* Unlike optical microscopes (such as magnifying glasses and general microscopes) that use light, a scanning electron microscope uses electron beams. It allows us to clearly see fine surface structures that cannot be observed with optical microscopes.

• Stainless steel container

Azearth Corporation (Headquarters: Taito-ku, Tokyo; President: Fumiaki Saito), a specialized supplier of protective clothing, launched sales of "AZ GUARDⓇ 8100FR"—a disposable protective suit featuring self-extinguishing properties—on July 1, 2026. This product was developed to maintain the performance of flame-retardant workwear and enhance worker safety. For further details, please feel free to contact us via the links below. *AZ GUARD is a registered trademark of Azearth Corporation.

Dear Sir/Madam, I hope this message finds you well and thriving. I would like to express my sincere gratitude for your continued support. We would like to inform you that our company will be closed for summer vacation during the following period: ■ Summer Vacation Period From Saturday, August 8, 2026, to Sunday, August 16, 2026. We will resume normal operations on Monday, August 17, 2026. Inquiries received during the vacation period will be addressed sequentially after the start of business. We apologize for any inconvenience this may cause and appreciate your understanding.

What is a sealed product air leak test device? It is an air leak test device that inspects the airtightness, sealing performance, and waterproofness of electrical equipment and packaging containers (cosmetics, food). It tests for leaks in products such as smartphones, tablet devices, keyless switches, wristwatches, bottle containers, and cosmetic containers (eyeliner, mascara).

Fukuda's new flagship model. - Masterless type (FLA-0200 series) - General type (FLA-0201 series) Two models of air leak testers. With the mastering correction function, high-precision measurements can be achieved in a short time. Please take a look at the catalog.

Fukuda Co., Ltd., which develops, manufactures, and sells leak testing equipment to inspect airtightness and sealing performance, provides a technical document that clearly explains the methods and theories of airtight testing, titled "Technical Manual." We are offering it as a PDF file. Please take this opportunity to download and view it!