As a dedicated B2B manufacturer, our standard MOQ typically starts from 10 to 20 units or a combined minimum total profile volume, making it highly flexible for commercial project trials and distributor trial orders. For specific architectural plans or bulk wholesale orders, please contact our sales team for an optimized logistics and pricing quote.

Yes. At Lihangda, we design and engineer our window and door systems to meet rigorous global standards. We regularly support projects requiring compliance with various structural integrity, wind-load, and thermal efficiency regulations. Please provide your local building parameters or required certification details, and our technical department will tailor the specifications accordingly.

Absolutely. We offer comprehensive engineering and technical services for global contractors and architects. Once you submit your project architectural blueprints, our senior engineering team will review, align, and provide detailed CAD or 3D shop drawings to ensure perfect opening adaptation and structural integration before manufacturing begins.

We provide extensive OEM/ODM customization. You can customize aluminum profiles (including depth, thickness, and various RAL powder coating/anodized colors), architectural hardware (top-tier Chinese brands or global premium brands like German Roto/HOPO), and glass configurations (double/triple glazing, Low-E coatings, argon gas filling, and laminated safety glass) to optimize thermal insulation and acoustics.

Our standard production lead time is generally 30 to 45 days after the confirmation of final technical shop drawings and receipt of the deposit. The exact timeline depends on the scale of the project, complexity of the customized configurations (such as special glass or unique powder coating finishes), and current factory capacity. We always provide honest, transparent lead times to keep your project on schedule.

We employ heavy-duty export packaging protocols designed for ocean and multi-modal freight. All profiles are wrapped in protective foam and film to prevent scratching, corner protectors are applied, and the products are secured within fully enclosed plywood crates or sturdy wooden pallets. This ensures zero movement inside the container and guarantees your products arrive at the job site in pristine condition.