Why Can We Always Ensure Excellent Quality

Quality Control

Quality Policy

Bicheng has established a comprehensive set of management procedures and approaches to ensure that all PCBs consistently meet customer requirements. These procedures cover the entire production chain, including vendor selection, work-in-progress (WIP) inspection, outgoing delivery inspection, and customer service.

Evaluation and Audit of Suppliers

All suppliers must undergo a formal evaluation by Bicheng. Furthermore, we assess and rank our suppliers annually to ensure that all materials consistently meet Bicheng’s quality standards. In line with ISO9001 and ISO14001, we continuously develop and supervise our suppliers, driving them to improve both quality management and environmental performance.

Contract Evaluation

Before accepting any order, Bicheng thoroughly reviews and verifies each customer’s requirements to confirm our capability to meet specifications, delivery schedules, and other demands.

Creation, Review, and Control of Manufacturing Data

Once customer design data and specifications are submitted to our marketing department, Bicheng verifies all requirements. The data is then converted into manufacturing data through CAM processes. A Manufacturing Instruction (MI) is subsequently generated based on actual production processes and technologies, serving as the guide for fabrication. Each MI must be reviewed by independent engineers and QA engineers before release.

Incoming Material Quality Control

All materials are inspected prior to warehousing. We have implemented strict inspection procedures and instructions to control incoming material quality. Advanced precision inspection instruments and apparatus enable accurate assessment of material acceptability. Materials are issued on a first-in, first-out (FIFO) basis. Materials approaching their shelf life trigger an automatic “alarm” to ensure they are used before expiration.

Control of Production Process

Full process control is achieved through accurate Manufacturing Instructions (MIs), comprehensive equipment management and maintenance, rigorous process control, strict WIP inspections, and clearly defined working instructions.

Final Control and Inspection

All PCBs must pass open/short testing and visual inspection after completing specified physical tests. We utilize various advanced testing systems, including customized probes and flying probe test machines, to guarantee 100% testing of every PCB.

Product Delivery Audit

A dedicated FQA (Final Quality Assurance) department inspects PCB products based on customer specifications and requirements using a sampling method. Only qualified PCBs proceed to packaging. Prior to shipment, the FQA also conducts a 100% audit of warehouse packing and shipping items, including product number, customer number, product quantity, and shipping address.

Customer Service

We have established a professional customer service team that proactively communicates with customers and addresses feedback in a timely manner. By maintaining a sharp focus on customer needs and expectations, we continuously adjust our service policies and PCB product requirements to better serve our clients.