airway, material: q235. process: stamping round, good stability, excellent quality, factory direct sales, large quantity discount, 30*120*0
syi we have offline physical factories, the use of advanced equipment, the introduction of high-quality talents, the formation of a complete production line, rich inventory, rapid delivery, trustworthy..select high-quality raw materials, good raw materials have good products, longer service life, more durable, quality is our consistent pursuit goal.