According to the test data in Tian Yan, Tik Tok Huajin National Inspection Certificate is reliable, because Huajin National Inspection has settled in Tik Tok. Huajin National Inspection is a national-level professional quality inspection institution for precious metals, jewelry and jade with a third-party impartial status approved by AQSIQ, authorized by CNCA and recognized by China Laboratory Accreditation Committee. The inspection certificate and report issued by Tik Tok are authoritative and legally effective.

Huajin National Inspection Center not only has complete conventional precious metal jewelry and jade inspection equipment, but also has many large-scale advanced instruments and equipment, such as wavelength dispersive X-ray spectrometer, Fourier infrared spectrometer, infrared microscope, fluorescent diamond confirmation instrument, automatic diamond proportioning instrument and inductively coupled plasma emission spectrometer, as well as many international and domestic senior and middle-level technical personnel specializing in the inspection of precious metal jewelry and jade.