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Envelopes

You usually don’t notice envelopes until something needs to be sent.
A desk, a stack of papers, maybe a pen left nearby. Someone folds a letter, slides it inside, presses the flap down. It’s a small action, but it feels like a clear ending to something.
Sometimes it’s a birthday card. Sometimes it’s a contract. Sometimes it’s just a note that needs to go from one place to another without being open on the way.
Different sizes sit in drawers without much order—white ones, brown ones, some thicker, some with a window cut into the front.
They only matter when they’re being used. The rest of the time, they just sit there, waiting.
Searches like “kraft paper envelopes A4 mailing use”, “self seal business envelopes bulk”, or “custom printed envelopes for office letters” usually come from people who just need something to send things properly, without thinking too much about it.

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Zhejiang Youdo Toy Co., Ltd.

Founded in 2008 and located in Longgang, Zhejiang — the heart of China’s printing industry — ZHEJIANG YOUDO TOY CO.,LTD specializes in designing, developing, and manufacturing high-quality card and game products. Our main offerings include playing cards, TCG/CCG cards, board games, puzzles, puzzle cards, tazos, stickers, fridge magnets, temporary tattoos, and promotional toys.

Our 20,000㎡ facility houses over 100 experienced employees and state-of-the-art German printing presses (Heidelberg CD102 six-color and 8+1). We maintain rigorous quality control at every stage, with in-house laboratory testing to ensure compliance with international standards including CPC, CCPSA, EN71, CE, RoHS, ISO 9001, ISO 22000, SGS, and FSC. We are also proud holders of the Kellogg’s Quality Certification.

We export 90% of our products to more than 200 markets worldwide, with a strong presence in Europe, North America, South‑West Asia, and the Middle East. Our trusted partners include Disney (Toy Story, Pokémon, Minions, One Piece, Doraemon), UNO, Kung Fu Panda, and many other renowned animation IPs.

With over 20 years of deep engagement in the card production industry, we have earned a reputation as a highly professional manufacturer and a leading enterprise in Longgang City. From OEM/ODM to branded finished products, we offer one‑stop solutions that combine innovation, quality, and reliable delivery.

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