The Pre-Shipment Inspection (PSI) is one of many types of quality control inspections conducted by Sinowon Innovation Metrology Manufacture Limited.. This inspection is done according to standard QC Test, or based upon customer requirements. Samples are selected and inspected for defects at random, according to these standards and procedures. For us, Pre-Shipment Inspection is an important step in the quality control process and is the method for checking the quality of brinell hardness test before they are shipped.

Sinowon is one of the most competent manufacturers of hardness measurement in China. We are getting known in the international market. Sinowon's portable hardness tester is various in types and styles to meet the different needs of customers. Safety is one of the outstanding characteristics of this product. From the electromagnetic blowdown level to the electromagnetic wave, all are well controlled to a low level. The product performs well in program control and material use reduction. It will not only elevate users' senses but most importantly, elevate their wellbeing and promote deep and healthy sleep. It is supported by multiple languages say English, Turkish, and German.

To achieve sustainable development, we implement the plan of three wastes treatment, including wastewater, waste gases, and waste residue during the production processes.