Quartz Plates Cooperation with a Korean Client

Client Profile
The client is a Korean high‑tech component manufacturer supplying semiconductor and optical equipment. They purchase precision quartz plates used as chamber view‑windows for thermal processing and optical inspection.

Main Pain Points
Strict requirements for flatness, surface quality and UV transmittance; micro‑bubbles or scratches will cause equipment failure.
Original overseas suppliers have long lead‑time and high unit cost.
Korean internal qualification procedure is strict; material test reports and dimension inspection records must be fully provided.

Client Requirements
Optical‑grade quartz plates, JGS2 material, tight tolerance on flatness, no visible scratches or bubbles. Samples needed for internal qualification before bulk order. Complete inspection documents for factory audit.

Project Process.

Technical communication: The client sent drawings with strict tolerance. We confirmed processing feasibility and quoted accordingly.
Sample qualification: We produced precision‑polished quartz plate samples, together with material certificate and dimension test report. After optical inspection and high‑temperature testing at client’s lab, samples passed their internal qualification.
First bulk order: Strictly control cutting, polishing, annealing and 100% visual inspection. Each batch comes with inspection documents. Shock‑absorbing inner packing plus export plywood cases to avoid scratches and breakage during air shipment.
Long‑term cooperation: Satisfied with product consistency and lead‑time, the client placed repeat orders, including custom‑size quartz plates

Key Takeaways
For Korean high‑tech clients, quality and documentation weigh more than low price. Full test records are essential for supplier qualification.
Sample validation is mandatory; clients will not place mass orders without lab verification.
Surface protection during packing is critical for optical‑grade quartz plates; scratches lead to direct rejection.
Maintain stable batch consistency to win long‑term repeat business.