Welcome to inquire Lian boiling cooking method can only detect the damaging effects of free calcium oxide. Since the fire burned more slowly than magnesium oxide, calcium oxide hydration rate, China Resources Cement, hence the boiling cooking method can not find insecurities caused by the magnesium oxide, only through high-temperature, high-pressure autoclave test, can determine this phenomenon . The insecurities caused by sulfur trioxide, only cold bread method, immersion method can be tested, about to try cake in water after curing 28d 20 ℃ ± 3 ℃, checks whether there is instability phenomenon. Because when the temperature exceeds 60 ~ 70 ℃, the China Resources Cement quality, will not form a volume expansion generated sulphoaluminate. Since national standards have to magnesium oxide and sulfur trioxide contents were limited provisions, so both tests autoclave method and immersion method generally can not do. Since national standards have to magnesium oxide and sulfur trioxide contents were limited provisions, so both tests autoclave method and immersion method generally can not do. China Resources Cement 325 | a booming building materials (certified) | Resources Cement a booming Guangdong Building Materials Limited. A booming Guangdong Building Materials Co., Ltd. (shop1395766632317.1688.com/)(www.foshanshuini.com) Guangdong Foshan, cement and products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In a booming building materials led the staff warmly welcome all inquiries negotiations to create a booming building materials and a better future.