Ningbo Yunsheng Import and Export co., ltd was founded under the verification and approval of the Ministry of Foreign Trade and Economic Cooperation of P. R. China, registered in NingboCity. The quality control system is carried out strictly according to ISO9001 and UL.We supply high quality PCB material boards and related products, including PCB drilling materials, melamine backup board, phenolic paper backup boards, aluminum entry, unclad board FR-4 A or B grade, CCL classification tester and PCB soler mask tester etc.We welcome wholeheartedly all valuable customers visiting our company homepage! We are always appreciating to all concerned people and customers who are expressing deep interests to our company.
