YAJ firmly believe success depends on details. To ensure our excellent quality, not only professional talent, and advanced technology, we also have 3 person responsibilities for quality inspection, after raw materials purchase, production, and product before shipment.

If needed, we also can arrange prefab steel structure pre-assembly before painting or galvanized treatment.

On 9th of Jan, 2017, In order to offer perfect product to our customer. We do the steel structure pre-assembly in our workshop. According to our erection drawing, we install the frame step by step, no need any cutting or welding, all bolts connection. Finally two workers install the main steel frame in 5hours,very easy to make it. Cheers!