Quality Control

Quality Control

China Loong Energy Storage Co., Ltd. applies structured quality control throughout sourcing, production, inspection, packaging, and shipment. Our approach is designed to support the safety, consistency, and reliable performance expected of products used in energy storage applications. Inspection criteria are established according to product specifications, customer requirements, and industry-aligned practices.

1. Incoming Material Inspection

Incoming materials and components are checked before they are released for production. Our inspection team reviews supplier documentation and verifies relevant characteristics against approved specifications. Materials that do not meet the defined requirements are identified, isolated, and evaluated before further use.

• Identity and specification checks confirm that received materials correspond to purchasing and technical requirements.
• Visual inspection identifies contamination, deformation, damage, corrosion, or other observable defects.
• Dimensional and characteristic verification is performed when required by the product specification.
• Batch and document review supports material traceability and consistent production control.

2. In-Process Quality Control

Production processes are monitored at defined stages to help prevent defects from moving to subsequent operations. Work instructions, process parameters, equipment condition, and operator checks are managed according to internal procedures. Inspection frequency and control points are adjusted to the characteristics and quality risks of each product.

• Key process settings are verified against approved production requirements.
• First-piece and in-process inspections are conducted where applicable.
• Critical dimensions, assembly conditions, workmanship, and functional characteristics are checked during production.
• Nonconforming items are segregated and reviewed to prevent unintended use.

3. Finished Product Inspection

Finished products undergo inspection before they are approved for packing and shipment. The scope of inspection depends on the product design, intended application, and agreed technical specifications. Where applicable, inspection may include appearance, dimensions, assembly quality, electrical characteristics, functional performance, identification, and safety-related checks.

Inspection records are maintained in line with internal quality procedures. Any deviation is reviewed, and product disposition is determined before release.

4. Packaging and Pre-Shipment Check

Packaging is selected to protect products from handling risks, moisture, dust, impact, and other foreseeable transport conditions, subject to the nature of the goods and shipping method. Before dispatch, the shipment is checked against the order and approved packing requirements.

• Product model, quantity, and order details are verified.
• Labels, markings, and accompanying documents are reviewed for accuracy.
• Packaging condition, internal protection, sealing, and carton integrity are checked.
• Special packing or documentation requirements are followed when agreed with the customer.

5. Feedback, Corrective Action, and Continuous Improvement

China Loong Energy Storage Co., Ltd. treats customer feedback and quality findings as important inputs for improvement. Reported issues are documented and reviewed to identify the affected product, production stage, and possible cause. Appropriate containment and corrective measures are then developed according to the nature of the issue.

Quality data from incoming inspection, production control, finished-product inspection, and customer feedback is used to refine inspection methods, work instructions, supplier controls, and process management. This practical improvement cycle helps us respond clearly to international B2B customers and maintain consistent quality expectations across future orders.