FAQ

We offer precision cutting, milling, drilling, tapping, counterboring, and CNC machining on all standard and custom aluminum profiles. Our CNC machining centers handle lengths up to 6.5m with positioning accuracy of ±0.05mm. Typical dimensional tolerance for cut profiles is ±0.2mm; for CNC-machined features we hold ±0.1mm or tighter per your drawing. We also provide assembly services — fastening, bolting, slot-groove connection, and full frame assembly ready for installation.

Aluminum deformation is a well-known challenge. We control it through three measures: (1) proper clamping — using soft jaws, vacuum fixtures, or distributed support points to avoid localized stress; (2) tooling — sharp carbide tools with polished flutes, appropriate helix angles for aluminum, and climb milling to reduce cutting forces; (3) process sequence — rough machining first, then stress-relief aging if required, followed by finish machining to release residual stress before final cuts. For thin-wall or long-span profiles, we also use custom support fixtures to prevent sagging.

We offer: Mill finish (cost-effective, industrial standard) · Anodizing (AA10–AA25, clear or colored, ISO 7599) for corrosion resistance and aesthetics · Powder coating (Qualicoat/GSB certified, RAL/Pantone colors) for outdoor durability · Wood grain transfer for decorative applications · Sand blasting for matte texture. Anodizing is recommended for electronics and cleanroom equipment; powder coating for outdoor structures and automation lines; mill finish for internal structural framing where appearance is secondary. We provide free sample swatches on request.

MOQ: Standard profiles — 1 piece (6m bar). Cut-to-size and CNC machined parts — 100 pieces minimum (negotiable for trial orders). Full assembly projects — 10 sets minimum.

Lead time: Standard profiles from stock: 3–5 working days. Cut-to-size: 7–10 working days. CNC machined parts: 12–18 working days depending on complexity. Full assembly with surface treatment: 20–30 working days. Sea freight to main ports: 15–35 days depending on destination. Air freight: 5–7 days. We provide a confirmed schedule with each quotation.

Quality is controlled at three stages: (1) Incoming — raw material certificate (6063-T5/6061-T6) and dimensions verified per ASTM B221; (2) In-process — first article inspection (FAI) with full dimensional report before batch production, then SPC sampling during machining; (3) Final — Full visual inspection plus AQL 2.5 dimensional sampling on finished parts. For new projects, we produce a sample (3–7 days) for your approval before mass production. We provide dimensional inspection reports, material certificates (MTR), and photos/video of finished goods and packing before shipment. Third-party inspection (SGS, Intertek) is welcome at your cost.

Absolutely. We welcome both on-site visits and remote factory audits. You can (1) visit our workshop and warehouse in Changzhou, Jiangsu — we assist with airport pickup and hotel booking; (2) request a live video tour (WeChat / WhatsApp / Zoom) of the production line, warehouse, and quality inspection area at any scheduled time; (3) appoint a third-party audit (SGS, BV, TUV) for an on-site capability assessment at your cost. Our facility is ISO 9001:2015 certified, and we have been serving industrial clients across multiple regions — including Europe, North America, the Middle East, and Southeast Asia — since 2014. A reference list of past export destinations can be shared on request through your account manager. Video references and customer testimonials are available on request.

Payment methods: T/T (telegraphic transfer) is the most common — typically 30% deposit upon order confirmation, 70% balance against copy of B/L (Bill of Lading) after shipment. For first-time customers, we accept L/C at sight (Letter of Credit) for larger orders. PayPal is accepted for sample fees only.

Incoterms 2020 supported: EXW (Ex Works, you pick up at our factory) · FOB Shanghai/Ningbo (we deliver to port, you arrange ocean freight) · CIF (we arrange ocean freight and insurance to your destination port) · DAP/DDP (we deliver to your warehouse, including duties for DDP). We help you choose the most cost-effective option based on your order volume, destination, and customs experience.

Quotation includes: unit price, surface treatment, packing, and standard export documentation (Commercial Invoice, Packing List, B/L, Certificate of Origin, Fumigation Certificate if needed).

Coordinated multi-supplier consolidation: When your order includes profiles together with related accessories (brackets, fasteners, casters, hinges), we coordinate sourcing from qualified suppliers and consolidate the items at a central warehouse. Each product category is properly declared with its correct HS code by a licensed customs broker. Heavy items are loaded at the bottom, light accessories on top, with separators to reduce transit damage. You receive one complete set of shipping documents (B/L, Commercial Invoice, Packing List, Certificate of Origin) rather than coordinating multiple separate bookings. Full transparency on customs documentation is available on request.

If damage or shortage is found upon arrival: (1) Document the issue with photos / video before unpacking and note it on the B/L or delivery receipt; (2) Notify us within 7 days with the B/L, photos, and a discrepancy report; (3) We will assist in coordinating with the relevant supplier and the logistics provider, typically investigate within 48 hours, and propose a remedy (such as replacement, credit note, or partial refund) based on the actual cause and supplier responsibility. Cargo insurance can be arranged on request; if you opt in and the loss exceeds the deductible, we will assist with the claim filing.

Packaging standard: profiles wrapped in protective film, bundled on wooden pallets with steel strapping; accessories in inner cartons + outer plywood cases. Custom packaging (branded cartons, barcoded labels, pallet marks) is available on request.