Qiligao Hygienic Fittings undergo strict quality control procedures at every stage of manufacturing . All products meet ISO 9001 and ISO 14001 standards, which define the requirements for quality management systems and environmental management systems, respectively.

Throughout sourcing, manufacturing and distribution, We adheres to stringent quality-control procedures. Alfa Laval labels all product packaging with bar code, product information and manufacturing date.

Matte, raw, bright and polished internal surface finishes are available with roughness averages (Ra) ranging from <0.8–1.6 μm.