Kän ye looi kek China Building Materials Research Institute Cement New Materials Institute, ye gam GB/T1345-2005 standard, ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l (A lëu bï ya tɔ̈ɔ̈u në luɔɔi kɔ̈k peei yiic)