Beijing Crown Test Precision Electrical Instrument Equipment Co., Ltd. ee tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yen Crown Testing Company Instrument R&D Department has a high efficiency R&D force and technical team in the industry, long term cooperation with university laboratories, and joint R&D advanced testing technology, is the important technical assurance force for driving our company in material testing technology improvement and testing methods innovation. Crown Testing Company Instrument R&D Department has a high efficiency R&D force and technical team in the industry, long term cooperation with university laboratories, and joint R&D advanced testing technology, is the important technical assurance force for driving our company in material testing technology improvement and testing methods Crown Testing Company ye baara kɛ ni electrical performance, mechanical performance, burning performance, thermal physical performance, friction performance and industry dedicated instruments R&D and sales, be se ka kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye .... Crown Test Company ye kɛ̈ɛ̈r puɔth, * teknoloji, kɛ̈ɛ̈r puɔth, kɛ̈ɛ̈r puɔth, kɛ̈ɛ̈r puɔth ye kɛ̈ɛ̈r puɔth ye kɛ̈ɛ̈r puɔth ye kɛ̈ɛ̈r puɔth ye kɛ̈