Quality & Validation FAQ
Below are the questions most frequently asked by automotive lighting mold clients, organized by quotation, technical capability, development process, quality validation, and international export. Can't find your answer? Contact us directly.
Quality & Validation FAQ
Q: How do you ensure quality?
A: Four-stage validation: annual machine accuracy verification, red-lead contact check (coverage ≥80%), customer in-house trial feedback, and 30 days without new issues constituting acceptance. Each stage must pass before the next.
Q: What certifications do you have?
A: Howmin is implementing ISO 9001:2015, with certification expected in 2026. We have established a full controlled-document system and standard operating procedures.
Q: How do you ensure clean color boundaries on multi-shot molds?
A: The key is core alignment precision and shrinkage compensation across resins. We compensate each resin's shrinkage at the design stage, ensure core alignment via single-setup 5-axis machining, and repeatedly fit the mold on our die spotting press for flash-free, mismatch-free color boundaries.
Q: Is there a mold warranty?
A: Industry practice covers design and manufacturing defects, not normal wear or mishandling. Specific warranty shot count and duration are stated in writing at quotation.
Q: What precision can the mold achieve?
A: 5-axis machining offers 0.004 mm positioning accuracy and 0.002 mm repeatability. Achievable part tolerances depend on structure and material, confirmed at quotation.