Quality Management

Yingstar Electronics is an ISO9001 certified PCB assembly house, operates under strict standards and procedures of IPC-A-610 Class 2 and IPC-A-610 Class 3.These procedures assure that our product satisfies customer requirements in every stage and aspect of a development; from the selection of the suppliers to WIP inspection, and through to outgoing inspection and customer service.

Evaluation And Audit Of our Suppliers
Suppliers must be evaluated before approval by Yingstar's supplier evaluation team. In addition, we will appraise and rank every supplier once a year to guarantee the suppliers provide the quality materials meeting our requirements. Furthermore, we continuously develops suppliers and promotes them to improve their quality and environment management basing on the systems of ISO9001.

Contract Review
Before accepting an order, Yingstar shall review and verify customer's requirements to make sure that Yingstar has the capability to satisfy customers' requirements including specification, delivery and other demands.

Preparation, Review And Control Of Manufacturing Instruction
Yingstar will evaluate all the requirements after receiving the customers' design data and related document. Then, transform the design datum into manufacturing datum by CAM. Finally, a MI which incorporates the manufacturing datum will be formulated according to Yingstar's real manufacturing process and technologies. MI must be reviewed after preparation by independent engineers. Before the MI is issued, it must be reviewed by QA engineers and get approved. Drilling and routing datum must be confirmed by first article inspection before issued. In a word, Yingstar makes ways to guarantee that the manufacturing documentation is right and valid.

Incoming Control IQC
In Yingstar, all materials must be verified and approved before going to the warehouse. Yingstar establishes strict verifying procedures and working instructions to control the incoming. Furthermore, Yingstar owns various precise inspection instruments and equipment to guarantee the capability to rightly judge whether the verified material is good or not.  

Process Controls Of Fabrication
Right manufacturing instruction (MI), total equipment management and maintenance, strict WIP inspection and monitoring as well as working instructions, all these make the whole production process totally controlled. Various precise inspection equipments including the AOI inspection system as well as perfect WIP inspection instructions and control plan, all these guarantee that semi-products and final products, all reach the requirements of customers' spec.

Strict PCBA tests  
Below are the strict PCBA Tests we applied: 
  • Visual Inspection,  100%.
  • X-Ray Inspection( for BGA and QFN package chips),100%.
  • AOI Inspection( for normal SMD package parts),  100%.
  • lCT Test and Functional test ( can guarantee all boards qualified before delivery),100%.
See details of those tests and equipments, pls click here.
Customer Service
Yingstar sets up a professional customer service team to proactively communicate with customers and timely deal with the customers' feedback. If necessary, they will cooperate with the customers to solve the relative problems on the customers' site. Yingstar is highly concerned about customers' needs and periodically surveys customers to learn about their requirements. Then Yingstar will timely adjust the customer service and make the products meet customers' needs.