Suzhou Oulijia Electronic Co., Ltd is located in Suzhou, a highly industrialized city,We are a super giant in producing earmuff .we can offer various kind of ear protection earmuff.Electronic noise-proof earmuff which was our most popular series and received word-renown.this series very popular in EU countrise. We got CE certificate and rosh as well. we can develop and design new products as requested by our clients. And we offer OEM and ODM services.