Qiu CR, Wang N Q. Electrician Equipment Local Discharge and Its Test Technology. Beijing: Mechanical Industry Publishing House, 1994.9
邱昌容，王乃庆．电工设备局部放电及其测试技术．北京：机械工业出版社，1994．9。
2
The Q. C. system had passed ISO9001, QS9000 accreditation, and had approved by A2LA, it also have the certificate of the 1st class management of exporting goods awarded by the CCIB of P. R. C. bureau.