We believe that long term partnership is a result of high quality, value added service, rich experience and personal contact for IMO, 3 Meter Smoke Density Tester , Burning Resistance Test Chamber , Oxygen Index Testing Equipment , The design, processing, purchasing, inspection, storage, assembling process are all in scientific and effective documentary process , increasing usage level and reliability of our brand deeply, which makes us become superior supplier of the four major product categories shell castings domestically and obtained the customer's trust well.