Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware

May 28, 2026 108

Prym is a German trims group with five centuries of history. Morito is a Japanese trims supplier that has been in business for over a hundred years. In the global apparel hardware industry, these two names sit at the top of the supply chain—and they are among the most demanding buyers in the world. They are not looking for the lowest quote. What they look for, and keep looking for through annual audits and spot checks, is a quality system that runs reliably, batch after batch.

Songji, based in Shenzhen, is one of their core suppliers. What many brands do not realise is that the factory making buttons for Prym and Morito also takes on direct brand partnerships. If you are searching for a source-level metal button manufacturer, this article tells you who Songji is and why the same quality system that satisfies the industry's toughest buyers is available to you directly.


 Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware


I. Why Prym and Morito chose Songji


When a trims group selects a button supplier, it does not place a single order and call it done. It looks at whether the factory can sustain quality over the long term.

Is every incoming batch of copper backed by a material certificate? Can over-limit heavy metals be caught and rejected before they enter production? Are in-process checks built into every stage, so that deviations are found immediately rather than days later? Can a batch made three years ago be traced back to its raw-material lot and its production parameters in minutes, or would the factory struggle to locate the records? These are the questions that determine whether a factory makes it onto the Prym and Morito supplier list.


 Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware


Songji earned its place because of a principle set at its founding in 1999: put quality in place before discussing price. That principle, embedded in the company culture, translates into testing at every step from raw-material intake to finished-goods dispatch. On the management side, it runs on two parallel systems: OEKO-TEX Standard 100 Class I and ISO 9001:2015—both maintained continuously, not pulled out for a one-off demonstration.


II. 72 factory audits are more than a number


Prym and Morito audit their suppliers across quality, environmental compliance, labour standards and regulatory requirements. This is not a one-pass exercise. It involves annual re-audits and unannounced inspections.

Over the past decade, Songji has successfully passed 72 international brand audits, including those from Walmart, GAP, VF and Carhartt. Quality management and document traceability are mandatory items in every one of these audits. Passing them repeatedly does not come from last-minute preparation. It comes from keeping test records for at least five years, attaching a material certificate to every incoming batch of copper, and completing four full-inspection checks—tensile strength, salt spray, heavy metals and dimensions—on every outgoing batch. Those records are retrievable on demand.

Songji's certifications reinforce this track record. OEKO-TEX Class I covers its entire range of metal buttons. HIGG FEM environmental performance assessment and GAP-TQP supplier quality certification add two further dimensions—environmental impact and on-time quality delivery—that large trims buyers require.


 Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware


III. Quality does not come from claims


What keeps a quality system running day after day is the physical plant behind it. Songji operates close to 700 machines inside a 12,000 m² factory, processing 300 tonnes of copper and 60 tonnes of alloy every month. From five-prong buttons to snap fasteners, from pushchair hardware to denim rivets, over 10,000 product styles are produced under the same quality standard.

Every batch goes through four checks: tensile strength, salt-spray resistance, heavy metal content and dimensional accuracy. The defect rate is below 0.3%, a figure drawn from Songji's long-term records with brand clients. Tensile testing is mandatory for every batch—snap fasteners are held to no less than 35 kg, and specialist hook fasteners to no less than 300 kg. Salt-spray testing starts at 24 hours. Heavy metal content is capped at below 40 ppm, a tighter limit than the general industry reference.


 Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware


IV. Who uses Songji buttons


Through the global distribution networks of Prym and Morito, Songji buttons end up on LEE jeans, GAP garments, Burberry and Armani ready-to-wear, and Diesel denim lines. The end consumer may never know the button came from Songji, but every piece has cleared the supplier audits run by Prym and Morito.

Beyond this indirect reach, Songji also works directly with brands. NUNA pushchairs and Carter's childrenswear use Songji five-prong buttons, because infant-product safety standards are the highest in the industry and Songji's 40 ppm heavy-metal limit plus OEKO-TEX Class I certification meet those requirements natively. JOOLZ baby stroller metal badges and PORTS high-end womenswear custom buttons also come from Songji. Different product categories demand very different things from a button—from regular grade to infant grade—and Songji's customisation capability covers the full range.


 Why Top Brands Choose Us: The Secret Supplier Behind Prym & Morito Quality Apparel Hardware


V. Working directly with a supplier that serves Prym and Morito


Sourcing buttons through intermediaries brings assured quality, but it adds a link in the chain—extra lead time, an extra margin and one more layer of communication. Working directly with Songji means dealing with the same factory that supplies Prym and Morito, under the same quality system and the same inspection standards, but with shorter lines of communication and greater visibility on lead times.

Songji supplies finished products to both Prym and Morito while accepting direct customisation requests from brands. The process is straightforward: confirm your requirements, receive a sample, examine it, and only then discuss order volume and final pricing. Songji has been manufacturing metal buttons since 1999 and has served over 100 brands. Whatever the size of your brand, the process stays the same—samples first, partnership second.

If you need custom metal buttons, Songji's quotations are transparent, with no hidden charges. If you would like to see samples or review test data, get in touch.