This product is made of high-quality iron and electroplating, not easy to rust, can be folded more than 50,000 times, through the salt spray test 48 hours. Folding and closing 90 degrees, the material thickness of 1.5 very durable. For this product we have more than ten years of production experience, production technology is very mature.
https://www.mblhardware.com/hinge/