Certification Imagen Nombre de la certificación Certificado por Ámbito del negocio Fecha disponible --- Fecha de caducidad Verified trademark registration State Intellectual Property Office (SIPO) TIHONG ,A trademark is a mark used to distinguish a business operator's brand or service from other business operators'goods or services. 2019-08-08 ~ Research & Development There is/are 5 - 10 People R&D Engineer(s) in the company.