由于预拌砂浆的成本、应用、质量检验与处理等问题，使建筑砂浆商品化成为难题。
Commercialization of building mortar is obstructed due to problems in cost, application, quality test and treatment of pre-mixed mortar.
由于预拌砂浆的成本、应用、质量检验与处理等问题，使建筑砂浆商品化成为难题。
Commercialization of building mortar is obstructed due to problems in cost, application, quality test and treatment of pre-mixed mortar.
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