Stainless Steel Is Not Just About 304; Standards Are the Easiest Point of Confusion in Online Purchase Disputes

Review the Comments First: The Direction is Right, But the Wording is Inaccurate

Statement in the comment	Verification result	More accurate understanding
304 and 316 are U.S. standards, so you can label them however you want without breaking the law	Does not hold	304 and 316 are common steel grade designations or generic names; the grade must match the actual material, and no exemption from proper labeling exists simply because it comes from a certain numbering system
You should buy GB 4806.9-2016	Already outdated	GB 4806.9-2023 came into force on September 6, 2024, and replaces the 2016 version
You should buy GB/T 29601-2025	Only half right	The 2025 version has been released, but as of September 1, 2026, it has not yet come into force; the current version is still GB/T 29601-2013, and the 2025 version takes effect on November 1, 2026
Just asking customer service for the standard number is enough	Not enough	You also need to verify the specific material, food contact declaration, product category, manufacturer, and the corresponding certificate of conformity

304 and 316 are not themselves synonyms for “food grade.” In the standard interpretation for household stainless steel sinks issued by the State Administration for Market Regulation, SUS304 is mapped to 06Cr19Ni10 and SUS316 is mapped to 06Cr17Ni12Mo2, while other stainless steel materials such as 201 and 430 are also listed. What these designations first answer is “what material this is, and roughly where its composition and properties sit,” not “this product has already passed all food-contact safety requirements.”

Therefore, treating “304 and 316 are American standards” as a legal conclusion that allows them to be “used arbitrarily” is unfounded. 304 and 316 are better understood as common steel grade designations or generic names; in the context of domestic regulation, consumers should be able to see the material type and composition, or Chinese standard designations and unified numerical codes, such as 06Cr19Ni10 and S30408. Using only vague terms like “high-quality stainless steel” or “premium stainless steel” does not allow consumers to know what they are actually purchasing.

“National Standard” Is Not a Type of Steel, but Several Different Requirements

If the product will come into contact with food, the first thing to look at is the mandatory safety requirements for metal materials intended for food contact. The current GB 4806.9-2023 applies to metal materials and products intended for food contact, and covers not only the alloy grade but also issues such as raw materials, surface condition, migration of metallic elements, and labeling. It addresses whether an item can be manufactured and used in compliance with food-contact product requirements.

GB/T 29601, on the other hand, is the product standard for “Stainless Steel Hollowware,” which is a recommended national standard. It addresses the specific quality and performance requirements for hollowware-type products. It is not a one-size-fits-all standard for all stainless steel products: items such as thermos cups, sinks, and knives each have their own corresponding product standards. You should look up the standard that applies to whatever specific product you are buying.

The relationship between the two can be simply expressed as:

Material specifications; GB 4806.9 sets out the safety baseline for food contact; specific product standards describe the performance requirements of containers or other products. All three are listed on the page, which does not mean that the actual goods received will necessarily match the page.

This is also why having “written GB 4806.9-2023” still does not constitute a test report. The standard number only indicates which set of rules the seller claims to follow; it cannot independently prove that the actual material, production batch, and tested sample of this product are consistent with one another. Conversely, you cannot immediately conclude that a product must be counterfeit just because it does not list all relevant standard numbers in a prominent location; you also need to consider the label, instructions, packaging, product category, and actual test results.

Why Brands and Platforms Change the Dispute Experience

The comments say to buy from a brand, JD.com, or Pinduoduo. What people actually value may not be that a certain platform can turn steel into better steel, but three more practical things: the seller’s identity is easier to verify, transaction records are easier to preserve, and there is an entry point to continue submitting evidence after a dispute arises.

The E-Commerce Law requires operators to disclose product information in a comprehensive, truthful, accurate, and timely manner. It also requires platforms to verify the identity information of registered operators and to preserve product and transaction information. For businesses that the platform marks as self-operated, the platform must clearly distinguish them from the businesses of other operators on the platform, and must bear the civil liability of a product seller or service provider for self-operated business. As for ordinary platform stores, the platform does not automatically become a guarantor of product quality simply by providing the webpage; only under specific conditions—such as knowing or having reason to know of an infringement of consumer rights and interests while failing to take necessary measures—will it be subject to corresponding liability determination.

Therefore, brands, flagship stores, self-operated channels, and large platforms are ways to reduce information asymmetry and the cost of providing evidence—not proof that “there will absolutely never be counterfeit goods.” Taobao, JD.com, and Pinduoduo should not be simply ranked into safety tiers either: within the same platform there are different sellers, and the same brand may have different channels, different batches, and different products.

When Asking Customer Service, Don’t Just Ask “Is This the Standard”

You can break the question down into the following four sentences and ask the other party to reply explicitly in the platform chat:

For the metal parts that come into direct contact with food, what are the specific material types and the corresponding Chinese standard grades or unified digital codes? Please do not simply reply with “food-grade” or “304”.
Is this product manufactured in compliance with GB 4806.9-2023? Can you provide the corresponding declaration of conformity and product qualification certificate? If a test report is available, do the model, batch, and sample in the report correspond to this product?
What product standards apply to this category? If it is a common stainless steel utensil, as of September 1, 2026, please distinguish between the current GB/T 29601-2013 and the issued-but-not-yet-implemented GB/T 29601-2025.
What are the manufacturer’s name, address, contact information, product model, and date of manufacture? Can the packaging and product listing be matched with one another?

If customer service can clearly explain each of these details item by item, consumers will have material they can compare and keep on record; if they merely keep repeating “don’t worry, it’s food-grade 304,” this doesn’t prove the merchant has committed fraud, but at least it shows the consumer still hasn’t completed the verification. Taking screenshots of the product page, standard number, and material commitments before placing an order is often more useful than arguing from memory after receiving the goods.

Already suspecting you bought a fake, first preserve the evidence chain

First, for products that come into contact with food, suspend their use until the material and safety have been clarified. Do not continue using them to hold food just because they look like stainless steel. Also, “not being 304” should not be directly equated with “definitely toxic”: the grade, food-contact compliance, and actual migration risk are not the same judgment; what is truly needed is evidence corresponding to the specific product and batch.

Second, preserve the product detail pages, promotional images, customer service chats, orders, payments, logistics, outer packaging, labels, and product photos. Do not discard the packaging and labels just to facilitate a return, and try not to move communications off the platform. The online shopping tips issued by the market regulation authorities also list these records as evidence for consumer rights protection.

Third, submit a clear issue through the platform’s after-sales service: what material was advertised, what label was received, what proof has the merchant provided, and where exactly the discrepancies lie. If negotiation fails, then file a complaint with the platform, the market regulatory department at the merchant’s actual place of business, or a consumer organization. When the specific composition needs to be confirmed, a qualified inspection or regulatory sampling is more likely to turn “it doesn’t look right” into a fact that can be acted upon.

Standards Do Not Give Counterfeits the Green Light

“The manufacturers know these labels aren’t illegal, so they do it this way” is an understandable suspicion, but at present this statement is still an inference about subjective intent and cannot be directly drawn from a single product label or a customer service conversation. In reality, there are at least three possibilities: the label and materials are both compliant, it’s just that consumers don’t understand them; the company’s labeling is vague or incomplete; or the company knowingly violates the rules and still engages in false advertising. Each requires different evidence.

What is certain is that the labeling of food-related products must be clear, truthful, and accurate, and must not deceive or mislead consumers. Operators must also disclose product information truthfully, comprehensively, and accurately. The standard does not turn “304” into a disclaimer word, nor does it turn “GB 4806.9” into a quality talisman. What it truly provides is a verification path: first ask about the intended use, then check the current standard; next, look at the specific grade, material composition, manufacturer, and certificate of conformity; and finally, treat the platform’s after-sales service and regulatory complaints as an extension of the evidence chain.

When buying stainless steel, the most worthwhile questions to ask are not “Is there a standard number that sounds tough?” but rather: “Does this standard correspond to my product? Are this piece of material and the label referring to the same thing? If they don’t match, can I leave sufficient evidence on the platform?” These questions come closer to real consumer protection than simply memorizing 304 or 316.

References

写作附记

Original Prompt

A topic seen on $blog-writer Zhihu: someone bought fake stainless steel on Taobao, went back and forth arguing, and commenters below discussed buying from brands, JD.com, or Pinduoduo—at least customer service handles these issues. Some also mentioned regulation, and the most useful comment was this: 304 and 316 are American standards that can be labeled arbitrarily without breaking the law; to buy according to Chinese national standards, look for GB 4806.9-2016 and GB/T 29601-2025, just ask customer service directly whether the product complies with these standards—the latest standard is already GB 4806.9-2023. It’s essentially the case that manufacturers know these labels aren’t illegal, which is why they do this. Check the reasonableness first, then write the corresponding article.

This article separates several claims from the comments: 304/316 are material grades, GB 4806.9-2023 is the current safety standard for metals in food contact applications, and GB/T 29601-2025 is a recommended standard for tableware that has been published but, as of the date of this article, has not yet come into effect. The article does not characterize paraphrased Zhihu comments—without specific products, reports, or orders—as the illegal conduct of any particular merchant, nor does it present any brand or platform as an absolute guarantee.