Quality Control & Warranty

Zhengsheng establishes a quality control and management system, regularly reviews relevant documents and records them in time. We report the operation and improvement of the entire production process in a timely manner, from material receipt, assembly to delivery. Based on a strict quality control system, the customer complaint rate is less than 0.5%.

IQC Inspection

IPQC Inspection

FQC (QA)

Aging Testing

The purpose of IQC inspection is to check the quality of raw materials, parts, etc. entering the production process. Through strict IQC inspection, unqualified raw materials can be eliminated in advance to avoid product quality defects.

IPQC inspection is to conduct random or full inspection of products at various stages of the production process. During the assembly process, IPQC will check whether the welding points are firm and whether the line connections are correct.

FQC (QA) is the last quality checkpoint in the production of LED lamps. Its responsibility is to conduct a comprehensive and strict inspection of the finished products to be shipped, including the function, appearance, packaging and other aspects of the lamps.

During aging testing, lamps are exposed to high temperature and high humidity, or run at a specific voltage and current. We evaluate the reliability of lamps by observing the light decay and electrical performance changes of the lamps during this period.

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