ZH Tech is the professional OEM/ODM manufacturer in hearing protection field in China. We processes independent manufacturing capabilities for hearing protection products. What our goal? To be the world first-class protective products supplier to lead the industry trend. Our advantage compared with others: 1.We have rich experience of one stop service for designing electronics ,assembly work. Manufacturing earmuff for US big super market and professional earmuff sellers. 2.OEM/ODM are welcome,our engineer can get what you want. 3.Constant improvement for the process of designing and manufacturing,3-4 or more brand-new models of safety earmuffs will be put into market per year. 4.CE, ANIS etc are all passed ,testing instruction are in US Michael&Associates lab. 5.Quick and professional feedback ensures the efficient and satisfying communication and service to customers.     ZH Tech hope to be your reliable partner.