Who We Are
Lianyungang Chemsize International Trading Co., Ltd. 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 specifications, responsive communication and stable shipment follow-up for overseas B2B customers. Our goal is to help customers move more smoothly from sampling and testing to regular supply.

Production Support and Cooperation
Chemsize works with long-term production partners in Donghai to support fused silica processing, grading, quality follow-up and shipment execution.
This cooperation helps us coordinate production details more efficiently and provide more practical support in sampling, specification confirmation, packaging and delivery.

How We Support Quality Control
We understand that for many customers, fused silica is not only about product name, but also about consistency, size control and practical document support. 
For this reason, we pay close attention to product consistency, particle size control, specification confirmation before production, inspection support, as well as packaging and shipment follow-up.
Samples, COA and related test documents can be provided based on customer requirements.

How We Work with Customers
We aim to make communication simple and practical. From inquiry to sampling, testing, order confirmation and shipment, we try to provide clear information and reliable follow-up.
For customers who need customized size ranges, packaging or supporting documents, we can communicate in advance and prepare accordingly.