Frequently Asked Questions

Everything you need to know about SUNLU 3D printing products and services.

How should I store my SUNLU filament to prevent moisture absorption?

We recommend storing your filament in a cool, dry place using a vacuum-sealed bag with desiccant or a dedicated filament dryer box like the SUNLU S2 to maintain optimal print quality.

What is the standard shipping time for international orders?

Orders are typically processed within 24-48 hours. Depending on your location and local warehouse availability, international shipping generally takes between 3 to 10 business days.

Are SUNLU filaments compatible with all FDM 3D printers?

Yes, our filaments are manufactured with a standard diameter tolerance of +/- 0.02mm, making them compatible with nearly all FDM 3D printers on the market that use 1.75mm or 2.85mm materials.

What is your return policy for defective electronics?

We offer a 30-day money-back guarantee and a 1-year warranty on all electronic devices, such as 3D pens and dryer boxes, covering any manufacturing defects.

Which payment methods do you accept?

We accept all major credit cards (Visa, Mastercard, American Express), PayPal, and various local payment options depending on your shipping region.

How can I track my order status?

Once your order has shipped, you will receive an email notification containing a tracking number and a link to our tracking portal to monitor your delivery in real-time.