huanyu tools was established in 1984, which cooperates with usa generalgroup m-we ***** of the products sold in the mainland are authorized by usa company.huanyu tool has its own import and export rights. it had developed seveal series of patent product, and enjoys anumber of techinical patent intellectual property right. huanyutools mainly produce many kind s of double safety hammer, its items are mainly export to europe, north america, middle east, russia, ***** a very high market share .