Customer case | BYD Auto
In automotive manufacturing, sheet-metal surface treatment connects the material to subsequent coating and plays an important role in product quality and production stability. Qingyuan supplies surface treatment products tailored to BYD Auto’s production needs, supporting the consistent output of conforming products through professional products and services.
Application needs
BYD Auto’s production involves cold-rolled steel (CRS), hot-rolled steel (HRS), galvanized steel (HDG/EG) and aluminium alloy (AL). Each substrate has its own surface conditions and treatment requirements, placing demands on product compatibility and process stability. For these mixed-material applications, Qingyuan supplies products for degreasing, silane treatment and phosphating to support surface treatment during production.
Product support
The main products used in this case are:
Degreasing: QOH-63A+QOH-63H, for degreasing and cleaning sheet surfaces to establish suitable surface conditions for subsequent treatment.
Silane treatment: QSi-981, used in the silane treatment stage to support pretreatment before coating.
Phosphating: QZn-1038, used in the phosphating stage to meet the surface treatment needs of the relevant production process.
Service support
From initial cleaning to subsequent surface treatment, Qingyuan links product quality closely with the customer’s production needs. Attention to the coordination of each process stage helps the customer manage production quality. Stable quality depends on careful execution at every step and continued attention to products and services.
Serving BYD Auto puts Qingyuan’s expertise into practice in automotive manufacturing. Qingyuan will continue to focus on customer needs, reliable products and professional services, contributing to the consistent output of conforming products and stable production quality.

