Our official Proforma Quotations remain valid for 30 calendar days from the date of issuance, during which quoted unit prices are 100% locked.

As an origin factory with robust global supply chain management and vertical manufacturing controls, we maintain transparent, predictable pricing while safeguarding our partners against sudden market volatility through the following framework:

  • 30-Day Firm Price Commitment: All valid quotations provide a guaranteed 30-calendar-day price lock, giving your procurement team ample time for budget approval, technical verification, and order processing.

  • Transparent Cost Indexing Threshold (±5%): We actively monitor international raw material market indices (e.g., optical glass, specialty gases, copper, aluminum). Unit prices are adjusted only if market material costs fluctuate beyond ±5%.

  • 7-Working-Day Advance Notice: If a price adjustment is triggered, we issue a formal written notice 7 working days in advance, complete with updated price schedules, effective implementation dates, and third-party commodity market reference data for full transparency.

  • Absolute Price Lock on Confirmed Orders (Signed PI): All orders with a signed Proforma Invoice (PI) or confirmed deposit within the 30-day quotation window are strictly executed at the original contracted price without any retroactively added surcharges, regardless of subsequent market price increases.