Return and Refund Policy

Effective Date: June 2026

At lanbo3dfilament.com, we operate a premium extrusion facility in Cixi City, Ningbo, manufacturing high grade 3D printing consumables for professional print farms, regional distributors, and educational institutions worldwide. We maintain vertical quality controls over our entire polymer supply chain, checking everything from raw resin compounding to final winding tension. However, we recognize that circumstances may arise where a return, replacement, or refund is requested. This document outlines our standard operating procedures, diagnostic mandates, and liability limits for standard retail, commercial bulk, and technical warranty transactions.

Because we supply high precision thermoplastic materials, our return policies are designed to balance customer satisfaction with strict quality controls. 3D printing filaments are chemically sensitive materials. Once exposed to environmental variables, their structural integrity can degrade. Consequently, any inventory returned to our warehouses must undergo a strict quality verification process before any refund, replacement, or credit is authorized. By initiating a purchase order or registering a commercial account on our platform, you acknowledge and agree to the conditions, timelines, and procedures detailed herein.

Standard Retail Returns

For individual retail purchases and professional prototyping orders acquired directly through our online store, you may request a return for a refund within 30 days of the carrier delivery date. This standard return window is strictly enforced. To qualify for a standard refund, the products must be returned to our regional logistics centers in pristine condition, meeting the following criteria:

  • The filament spool must be in its original, unopened, vacuum sealed moisture barrier packaging. The outer barrier film must be completely free of punctures, tears, or compromises, and the active interior silica desiccant pack must remain fully sealed.
  • The custom outer retail box must be undamaged, free of writing, adhesive tape, or shipping labels, and in resalable condition. It must be packed inside a secondary shipping carton to protect the branding during return transit.
  • You must provide your original order confirmation email, transaction receipt, or invoice number generated by our administrative portal.

Standard retail returns that fail to meet these parameters will be rejected by our receiving warehouse and sent back at the buyer's expense. Return shipping costs are the sole responsibility of the customer. Original shipping fees, logistics surcharges, and payment processing fees are strictly non refundable. Additionally, approved standard returns are subject to a ten percent restocking fee to cover incoming quality check inspections and inventory processing.

Moisture Absorption, Ambient Exposure and Polymer Reclamation

Thermoplastic polymers are naturally hygroscopic materials, meaning they actively absorb moisture molecules from the surrounding air. Materials within our catalog, such as PLA Basic, PLA Matte, PLA Silk plus, PLA Pure, PLA Translucent, PLA Tough plus, PETG Basic, PETG HF, PETG Translucent, ABS, TPU 95A, and PA6 CF, possess varying rates of moisture absorption. For example, flexible TPU 95A and carbon fiber reinforced PA6 CF can absorb enough ambient humidity within hours of open air exposure to degrade their printing performance.

When moisture is trapped within the polymer chain, the heat of the printing nozzle causes the water to vaporize instantly. This vaporization leads to structural voiding, surface blemishes, bubbling, popping noises, high stringing, and layer adhesion failures. Because these issues are caused by post open environmental exposure rather than manufacturing defects, we do not accept returns or issue refunds for opened spools unless a pre verified manufacturing defect is documented.

To assist our customers, our technical desk requires a pre dry troubleshooting diagnostic run before any refund assessment is initiated. If you experience printing issues, you must dry the affected spool in a dedicated filament dryer or convection oven according to our technical guidelines before requesting support. Standard drying parameters for our materials are:

  • PLA variants (Basic, Matte, Silk plus, Pure, Translucent, Tough plus): Dry at 50 to 55 degrees Celsius for 8 hours.
  • PETG variants (Basic, HF, Translucent): Dry at 60 to 65 degrees Celsius for 8 hours.
  • ABS and PA6 CF (Carbon Fiber Nylon): Dry at 70 to 80 degrees Celsius for 8 to 12 hours.
  • TPU 95A: Dry at 65 degrees Celsius for 6 hours.

If pre drying resolves the surface finish or extrusion issues, the product is considered fully functional, and any return request will be closed. We encourage print farm managers and distributors to maintain low humidity dry storage systems to preserve filament performance once the vacuum seal is broken.

Warranty Claims and Defect Verification Protocols

At lanbo3dfilament.com, we stand behind our manufacturing tolerances. Our Cixi facility utilizes continuous dual axis laser micrometer measurement systems during extrusion. This automated setup measures filament diameter at high frequencies, flagging any deviation. In the rare event of a manufacturing defect, we will replace the affected spool or issue a credit. Qualifying defects include:

  • Diameter Deviations: Extruded filament diameter consistently exceeding our documented tolerances of plus or minus 0.02 mm for PLA and PETG variants, plus or minus 0.03 mm for ABS and PA6 CF, or plus or minus 0.04 mm for TPU 95A.
  • Winding Failures: Severe, overlapping crossovers or mechanical tangling created during our factory spooling phase that physically prevents the spool from spinning or feeding.
  • Compounding Defects: Severe, uniform structural brittleness of the filament straight out of a freshly opened, vacuum sealed bag, indicating a polymer compounding or masterbatch blending failure.

To file a warranty claim, you must submit a support ticket to our technical desk. The ticket must include your original order invoice, high resolution photos or video of the printing issue, a screenshot of your slicing configurations, and a clear photo of the batch production lot number located on the spool's side label. This batch number allows our engineering team to trace the production run, review raw material lot records, and inspect extrusion sensor logs. Claims submitted without a valid batch production lot number cannot be verified and will be declined.

B2B Commercial, Palletized and Wholesale Return Frameworks

For high volume print farms, commercial distributors, and educational networks purchasing our bulk palletized packages—such as the Engineering Core Pack, Printing Farm Mix, or PLA Industrial Pack—all return parameters, restocking fees, and replacement procedures are governed by the specific logistics clauses in your active distributor sales contract. These commercial agreements operate under the following parameters:

  1. Transfer of Liability: Unless stated otherwise in your contract, all commercial shipping is handled on an EXW Cixi or FOB Ningbo basis. Under FOB terms, our factory's liability ends once the cargo passes the ship's rail at Ningbo Zhoushan Port. Any physical damage to pallets, master cartons, or individual filament boxes sustained during ocean transit or port handling must be claimed directly with your shipping carrier or marine insurance provider.
  2. Transit Damage Inspection: Upon container or LCL delivery, your receiving team must inspect the physical integrity of the pallet wraps and master cartons. Any visible tearing, crushing, water exposure, or pallet shifts must be noted on the carrier's Bill of Lading at the time of delivery. Such occurrences must be reported to our logistics desk within 48 hours, along with photographic evidence, to assist in carrier claims.
  3. Stock Balancing Restrictions: We operate on a direct to order manufacturing schedule to offer competitive wholesale pricing. Consequently, we do not offer stock balancing, product exchanges, or returns for unsold, slow moving, or overstocked inventory unless an exclusivity agreement has been contractually established. All wholesale transactions are final.

Our Step by Step Return Merchandise Authorization Workflow

To ensure efficient tracking, safety compliance, and accounting reconciliation, all returns must follow our structured Return Merchandise Authorization workflow. Unsolicited shipments sent directly to our warehouses without an active RMA number will be rejected at the loading dock, and any associated return delivery charges will be billed back to the sender. Please follow this procedure:

  1. Submit RMA Request: Email our support desk or submit a ticket via our online contact portal. Provide your original order invoice, the itemized list of spools you wish to return, and the technical reason for the return.
  2. RMA Approval and Numbering: Our logistics team will review your request against our timeline and packaging guidelines. If approved, we will issue a formal RMA document containing your unique RMA tracking number and the address of the nearest localized receiving warehouse.
  3. Secure Protective Packing: Place the unopened filament spools inside a sturdy, double walled corrugated shipping box. Do not ship spools in their individual retail boxes alone, as they will crush during transit. Fill any empty spaces with packing material to prevent shifting, and write your RMA tracking number clearly on the outer shipping carton.
  4. Dispatch and Tracking: Ship the package using a reliable, trackable shipping service. Email your RMA tracking number and carrier receipt to our logistics desk. The buyer is responsible for all shipping charges, export documentation, and transit risks.
  5. Receiving and QA Inspection: Upon receipt, our quality assurance team will inspect the shipment. We will verify the unique RMA number, confirm that the spools are genuine, check that the vacuum seals are intact, and inspect for damage. This evaluation is typically completed within 3 business days of receipt.
  6. Refund Issuance: Once the returned goods are approved by our QA team, we will process your refund. The refund amount, minus any standard restocking fees, will be credited back to your original payment method within 5 to 7 business days. You will receive an automated transaction confirmation from our portal.