we own 3D printing filament production lines and 12 packaging lines.

Hunan Huanyou International Trade Co., Ltd. covers a factory area of 5000 square meters, with more than 100 employees, including 14 professional staff dedicated to R&D and quality control.

We focus on manufacturing high-quality plastic filaments for FDM 3D printing with rigorous full-process quality control. Our filaments boast precise dimensional accuracy and smooth feeding without nozzle clogging, compatible with all mainstream 3D printers.

Our main products include

Our core products cover PLA, PETG and other filaments. PLA is easy to print with abundant color choices, perfect for cultural and creative models. PETG features high toughness and great impact resistance, ideal for structural components and outdoor items.

We supply in-stock filaments of various specifications and accept OEM customization services. Our products are exported to many countries worldwide, widely recognized by makers and industrial clients.

100% Natural. Minimal Ingredients.

We offer strong performing natural litter that takes away the pain of kitty clean up.

  • 99% Dust-Free

  • Great Odour-Control

  • Easy to Scoop

  • Low Tracking

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From Our Customers

  • ★★★★★

    The color-changing effect is definitely the highlight of this filament. Instead of sudden color changes, the rainbow shades blend gradually throughout the print, creating a much more interesting result than a standard single-color filament. The five-color combination works especially well for taller models where more transitions can be displayed.

    The print quality is also impressive. The filament feeds smoothly, maintains consistent extrusion, and produces clean layer lines with reliable results. I like that the colors become the main focus without needing extra adjustments or complicated settings.

    The filament arrived vacuum sealed with moisture protection and was ready to use. It printed well with regular PLA settings and is a great choice for decorative models, display pieces, and creative projects where appearance and ease of printing both matter.

    Patti Parsons

  • ★★★★★

    I keep several rolls of test and prototype filament for my Bambu A1, and I was happy to add this rainbow filament to my collection. The overall quality and printing performance have been very satisfying.

    The roll arrived in a cardboard box with the spool vacuum sealed and packed with a small bag of desiccant to help maintain dryness. After drying the filament before use, it remained flexible and loaded into my AMS smoothly without any compatibility issues. The spool design also worked well during printing.

    Printing was simple and reliable. I used a standard PLA profile with a small temperature adjustment based on the recommended settings. Test prints on both textured and smooth plates showed good adhesion, smooth first layers, and consistent results.

    The rainbow colors are spaced nicely and transition naturally, making each print look unique and visually appealing.

    Ava Peck

  • ★★★★★

    This is a beautiful filament that creates colorful and eye-catching prints. The rainbow gradient effect is my favorite feature, as the colors transition smoothly during printing and add a lot of visual interest without requiring filament changes.

    The printing performance has also been excellent. The filament feeds smoothly, prints consistently, and works well with my regular PLA settings without clogging or unexpected melting issues. The finished layers look clean and even throughout the spool.

    I also found that the printed models are easy to sand if additional finishing is needed. Overall, this filament combines reliable print quality with a fun color effect, making it a great option for creative projects, decorative models, and anyone looking to add more color to their 3D prints.

    Maskuroi

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