The following are custom-made products and will be dispatched within 15 to 20 days. The metal structure and material comply with national standards. The banquet aluminum dining chairs are made of 25*25*2.0MM extremely hard high-quality furniture square aluminum material. The banquet steel dining chairs are made of 20*20*1.2MM extra-hard high-quality square steel for furniture. The banquet steel dining chairs are made of 25*25*1.0MM extra-hard high-quality square steel for furniture. All the pipes are bent into arcs by automatic pipe benders, ensuring that each bend position is consistent and meets the standards. They are smooth, wrinkle-free and non-deformable. The pipes reach international hardness standards. High-power welders are used to make the weld seams smooth and fine, and the connection points are flat, firm and beautiful. 3 The surface of the pipe is treated with special paint for metal furniture by baking varnish. The paint is filtered through multiple layers, making the surface smooth without bubbles. Both adhesion and wear resistance meet international standards. Under normal use, the surface remains as good as new. 4 The seat cushion sponges are all made of high-quality high-density PU shaped sponges, which are durable and do not deform. The softness and hardness can be adjusted according to the user's requirements. 5 Each leg of the dining chair is equipped with anti-collision foot pads and wear-resistant foot plugs, which can prevent users from scratching the paint of the dining chair and scratching the floor when using it. 6 The dining chairs are designed based on ergonomic principles and comply with international standards. Contact number: 13735713828, wechat: 13735713828