EP Spirit Level Bubble Factory is one of the professional measuring instrument manufacturers in China.Our main products including: spirit level vials, circular levels, spirit levels, spirit level key chain and high precision vials, etc. widely apply in laser spirit levels, teaching instruments, electric tools, hand tools, etc. Popular in domestic and oversea markets.Owning to its advanced technology and management, complete quality control system, supported by abundant technical and complete equipment. All products have already reached international standard, and have passed the authentication of international environmental protection (ROHS authentication).70% of our products are exported. Manage our factory strictly according with ISO90000 quality control system.