• Designated floor construction service provider for Fortune 500 companies

• Free technical guidance from senior floor engineers

• 12 years of experience with the professional hardened floor construction team

Yajie Company specializes in producing and selling stone care products and concrete hardeners. Kingstone is a product of PROSOCO in the United States. Kingstone concrete colorant and Kingstone lithium-based concrete hardener are its core products. The products are as strong as steel, radiant, bright in color, and never fade.