Return & Refund Policy

Effective Date: June 2026

At Lanbo Filament, we are committed to maintaining strict quality standards across all our extrusion lines. If you are not satisfied with your purchase, or if you believe you have received a defective product, please review our return guidelines below.

1. Standard Retail Returns

For individual retail purchases, you may return unopened items within 30 days of delivery for a refund. To qualify for a standard return:

  • The filament spool must be in its original, unopened, vacuum-sealed packaging with the desiccant pack intact.
  • The outer protective box must be undamaged and in resalable condition.
  • You must provide the original order number or proof of purchase.

Please note: Standard return shipping costs are the responsibility of the customer. Original shipping fees are non-refundable.

Moisture Policy

Because 3D printing filaments are hygroscopic (they readily absorb moisture from the surrounding environment), we cannot accept returns on opened spools for a refund unless a clear manufacturing defect is present.

Once the vacuum-sealed barrier is compromised, the polymer is subject to ambient humidity, which can affect printing performance. If you are experiencing bubbles, popping noises, or stringing, we recommend drying the material in a dedicated filament dryer according to our recommended temperature guidelines before requesting an assessment.

Warranty Claims

In the rare event that you receive a batch with a physical anomaly, we will replace the item or issue a credit. Manufacturing defects include:

  • Outer diameter measurements consistently exceeding our ±0.02mm tolerance limit.
  • Severe cross-winding or overlapping tangles created during our factory spooling phase.
  • Severe structural brittleness out of a freshly opened, vacuum-sealed box.

To submit a warranty claim, please email our support team with your order details, photos or a brief video of the issue, and the batch production number located on the spool sticker.

B2B Bulk Returns

For commercial distributors and wholesale accounts, return policies are governed by the specific terms laid out in your active sales contract.

  1. Transit Damage: Visible damage to pallets or master cartons during transit must be noted on the carrier's bill of lading at the time of delivery. Report transit damage to our logistics team within 48 hours.
  2. Stock Balancing: We do not offer automated stock balancing or returns on unsold overstock unless explicitly outlined in a geographic exclusivity or distributor agreement.

Return Process

To begin the return process, please complete the following steps:

  1. Request RMA: Contact our support office via email or the site contact page to request a Return Merchandise Authorization (RMA) number.
  2. Package Safely: Pack the unopened spools securely in a shipping carton to prevent damage in transit. Clearly write your assigned RMA number on the outside of the shipping box.
  3. Ship: Send the package to our designated return address using a trackable shipping service. We are not responsible for packages lost or damaged in transit.
  4. Inspection & Refund: Once received, our warehouse team will inspect the item's vacuum seal. Approved refunds will be credited back to your original payment method within 5 to 7 business days.