JMA attaches great importance to the quality of our aluminum products. In order to ensure quality, we have a testing team of more than 200 people which is divided into two departments: quality inspection center and a quality assurance department. The quality inspection center has passed the certification of CNAS (China National Accreditation Service for Conformity Assessment). This certification is also accepted by the International Accreditation Forum (IAF), the International Laboratory Accreditation Cooperation Organization (ILAC), the Pacific Accreditation Cooperation Organization (PAC), and the Asia-Pacific Laboratory Accreditation Cooperation (APLAC).

In the raw material purchasing stage, although the raw material has been strictly audited, we still carry out batch sampling which includes chemical composition testing, macrostructure testing and microstructure testing. In addition, we will certainly test the hydrogen content of the raw materials. Only raw materials that are tested and qualified can be put into production.

In the production process, we will perform sampling tests on the semi-finished products. If there are unqualified products, we will immediately check where the problem is. Firstly, the three coordinate measuring instruments are used to measure the cross-section size of the product. The cross-section size is the most important factor for the aluminum profile. For these semi-finished products, we will carry out another chemical composition, macrostructure and microstructure test for their materials. Before shipment, we will also test the coating on the surface of aluminum profile several times. These tests include the performance, color, gloss, film thickness test and so on.

JMA will also regularly inspect equipment in the processing workshop to ensure the normal operation of the equipment.