With the continuous development of high-tech, high-difficulty and high-risk research such as life science, biological science, militarization research and international infectious diseases in China, the domestic demand for biological laboratories is increasingly intense. I companies in strict accordance with the: laboratory purification engineering international standard ISO/DIS 14644, and the laboratory clean workshop design specification "GB50073-2001", ventilation and air conditioning engineering construction and acceptance standard "GB50243-2002", biological laboratory design specifications and relevant national standards, regulations, clean room design and construction of biological laboratory purification engineering and domestic comparable to other similar engineering purification engineering company: safety performance is high, low cost, simple maintenance, low operating cost, etc.