What coffee made from and how a thermos cup recall unfolded

Grandpa's Tea, a chain milk tea brand, released a limited-edition Garden Thermos Cup for its sixth anniversary. Buyers later reported rust spots around the rim and an unusual odor after a few days of use. After media coverage on October 22, the brand sent the cup for testing and confirmed the liner is 316 stainless steel, attributing the rust to craftsmanship problems.

The brand then began recalling that batch of thermos cups, while some stores had already failed to satisfy customers seeking exchanges or returns. Those customers raised concerns about heavy metal leaching from a rusted liner. The case is a reminder to check material and workmanship details before buying a vacuum cup, and to press for a remedy when a quality issue appears.

The chain milk tea brand Grandpa's Tea launched a limited-edition Garden Thermos Cup to celebrate its sixth anniversary, attracting many fans to collect the merchandise. However, some consumers discovered rust marks around the rim along with a strange odor after using it, sparking concerns about product quality. Multiple users on social media posted similar issues, yet after-sales handling failed to satisfy consumers. After media reports on October 22, the brand took the matter seriously, sent the product for testing, and announced preliminary investigation results, confirming that the metal liner was indeed 316 stainless steel and that the rust was caused by craftsmanship issues. It then initiated a recall of this batch of thermos cups. Front Street reminds coffee lovers to pay attention to material and craftsmanship details when purchasing thermos cups, and to defend their rights promptly when quality problems arise.

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According to media reports, a loyal customer, after learning that Grandpa's Tea had launched a limited-edition Garden Thermos Cup for its sixth anniversary, ran to multiple stores to collect the merchandise, and finally managed to buy one at a store farther away.

Unexpectedly, after only two days of use, the customer smelled an odor coming from the cup, and fine rust spots appeared around the rim. According to the product packaging, the thermos liner is made of austenitic stainless steel SUS316. Logically, this material is heat-resistant and corrosion-resistant, and should not rust after just a few days of holding hot water.

Yet the facts were right there, and consumers could not help but question the product quality, worrying whether the rusted thermos might pose a risk of excessive heavy metal leaching and thus endanger users' health. At the same time, many users on social media who had bought this limited-edition merchandise also posted photos, reporting that the liners of their thermos cups likewise showed varying degrees of rust and scratches.

During this period, many customers tried to contact stores, hoping to apply for after-sales exchange or return services. But the solutions offered by some stores failed to satisfy consumers, and the official customer service hotline was often busy with slow processing, making it impossible to effectively solve the thermos quality problems users encountered.

In response, some netizens suggested that consumers encountering similar situations report them to relevant regulatory authorities, urging the brand to give users a reasonable explanation as soon as possible. On October 22, several media outlets including Pear Video reported on the matter. The official response said that consumer complaints had been received, but not all cups would show rust after use.

This afternoon, Grandpa's Tea, which attached great importance to the matter, issued a formal response on its official Weibo, stating that after learning of the situation, it immediately launched an investigation procedure, sent this batch of products to an institution with legal testing qualifications for quality inspection, and announced the preliminary verification results to users.

The official statement said that before the thermos cups were produced and launched, the brand had reviewed the commissioned manufacturer, production qualifications, quality certificates, functional use, and other standards, and only launched sales after confirming they were qualified .

Second, according to the Test Report issued by Shanghai Lelang Testing Technology Co., Ltd., the submitted thermos cup meets the requirements of S31608 (316) in standard GB/T3280-2015. The chemical composition of the metal liner of this batch of thermos cups is 316 stainless steel. As for why the liners of some products showed rust and scratches, the official preliminary investigation result is that this was caused by product craftsmanship issues.

The brand deeply apologizes for the poor experience caused to users by the thermos cup quality problems, and has initiated a recall of this batch of "Garden Thermos Cups." Consumers can return them at offline stores within the specified time, while the pure tea vouchers distributed together with the thermos cups are unaffected and can still be used normally.

Image source: Internet

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