质量保证 & Warranty Policy
Effective Date: January 1, 2026
At LangHe Industry Co., 有限公司. (including our subsidiary LangHe Foundry), quality is the core of our operations. We adhere to rigorous quality control frameworks to ensure every precision component delivered meets or exceeds client specifications.
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1. Quality Management System (ISO 9001:2015)
Our production facilities operate strictly under the ISO 9001:2015 Quality Management System (Registration No. 3082400657R0). From raw material verification to final dimensional inspection, every process follows fully traceable protocols.
2. Standard Inspection & 公差
- Standard Machining Tolerances: Unless explicitly specified otherwise on engineering 2D drawings, standard production defaults to ISO 2768-m (中等的) for CNC machining.
- Inspection Equipment: Inspection report metrics are derived using certified CMM (协调测量机), 光学比较器, height gauges, and spectral analyzers for alloy composition.
- Documentation: Material Test Reports (mtrs), CMM Inspection Reports, and Certificates of Conformance (CoC) are available upon request prior to shipment.
3. Non-Conformance & Warranty Claims
We stand behind the quality of our manufactured parts. If any delivered components fail to meet agreed drawing dimensions, 材料规格, or tolerance limits:
1. Claim Period: Claims for non-conforming parts must be submitted within 30 天 of receiving shipment.
2. Claim Procedure: The customer shall provide a detailed non-conformance report accompanied by clear photos, dimensional measurements, or third-party inspection data.
3. Resolution Commitment: Upon verifying that non-conformance originated from our production:
- Remanufacture: We will expedite the remanufacturing and replacement of defective parts at our sole expense (including express shipping).
- Rework / Credit: 或者, we will issue a full or partial credit/refund for the affected components as agreed upon with the customer.
4. 限制
This warranty does not cover defects resulting from improper storage, secondary customer modifications, misuse, normal wear and tear, or design flaws present in original customer-supplied CAD specifications.