Zhongda United Holding Group Co., Ltd. was first established in 1964. After years of efforts,it is now an ISO9001,ISO14001 and OHSAS18001 qualified enterprise with more than 3000 employees and total area of 478,000 square meters.In 2020,the company’s total sales amount was $846.5 million and benefit & tax $6.33 million.

We specialize in the production of a complete range of screws, nuts,thread rods etc.From production to delivery,we ensure quality control and assurance is at the core of our belief and that our customers will receive the products with zero defects.

We can supply Chipboard Screws & Construction Screws(capacity: 1000tons per month), Drywall Screws(capacity: 1000tons per month), as well as other screws, bolts, nuts, thread rod and stamping parts.We consider ourselves as a solution provider of fasteners, especially when it comes to project supply.

We can also provide full range of DIY assortment and professional packaging design solution for retailer display purpose. We have good experiences cooperating with European and America retailers (TCHIBO, LIDI, ALDI, HORNBACH, LOWE’S, HOMEDEPOT ,etc.)

We have our own lab, which is CNAS approved,as we treat products quality as priority.

With our passion in fasteners,you will find our team a trustworthy partner and we are eager to
hearing from you.Due to company's future plan and business segmentation,our fastener business is now operating under the name ZDI SUPPLIES (HAIYAN) CO., LTD from 2020.09