Chemsize is a China-based supplier of fused silica sand, grains and powder for investment casting, refractory, technical ceramic and related industrial applications.

We focus on practical product consistency, clear size ranges, stable document support and responsive communication for overseas B2B customers. Samples, COA and related test documents can be provided based on customer requirements.

Our goal is to help customers move more smoothly from sampling and testing to regular supply and shipment.