Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Salt spray resistance GB/T1771-91 No change in coating film for 1000 hours,single side corrosion<2mm at the cross-section Wet heat resistance GB/TI740-79 >1000 hours of light loss,≥l Corrosion resistance Photoaging test ASTM Gl540UV0.78w/m/@340nm 500h…
