See the design before you order.

Design file packages include complete engineering documentation: annotated schematics, editable PCB source files, production Gerber files, bill of materials with sourcing notes, assembly drawings, technical specifications, and manufacturing handoff briefs. You receive everything needed to understand the design, adapt it to your requirements, or hand it to a manufacturer for production.

Yes. After purchasing design files, you can request wholesale manufacturing through our Haikou facility. We manufacture products as-is from our designs or adapt them to your specifications (branding, capacity, features, packaging). Contact us with your volume requirements and customization needs for a detailed quotation.

MOQs vary by product complexity and customization scope. Standard designs typically start at 100-500 units. Custom development or significant modifications may require higher volumes. Sample units are available for evaluation before committing to production quantities.

Design file purchases grant you the right to study, adapt, and use the designs for your own product development and manufacturing. You may manufacture products based on adapted designs. Haikou Yuyoukang Trading Co., Ltd retains ownership of the original designs. You cannot resell or redistribute the design files themselves to third parties.

Lead times depend on order volume, customization requirements, and component availability. Standard products typically require 4-6 weeks for production plus shipping. Custom development adds 2-4 weeks for engineering review and prototype validation. Rush production may be available for urgent projects. Exact timelines are confirmed during quotation.

Yes. Design file purchases include email support for clarifying documentation, answering technical questions about the architecture, and discussing adaptation strategies. If you choose to return your adapted design to us for manufacturing, we provide engineering review, design-for-manufacturing feedback, and production support throughout the project.

Absolutely. Our designs are engineering starter packages meant to be adapted. Common customizations include battery capacity changes, connector placement, branding, enclosure modifications, feature additions, and component substitutions. Purchase the base design files first, then work with our team on customization scope and manufacturing.

Our manufactured products comply with relevant safety standards including CE, RoHS, and product-specific certifications (IEC62619 for batteries, VDE4105 for grid-tied systems). Certification scope is confirmed per product during quotation. For custom developments, we can support your certification requirements and testing needs.

Contact us with your product requirements, target specifications, intended use case, and volume expectations. Our team will assess the scope, propose an approach (new design or adaptation of existing), provide development timeline and cost estimates, and outline the path from concept through manufacturing.