Import Door Knob — Buy in Bulk from Supplier in China

The door knob supplied by D & D Hardware Industrial Co., Ltd. measures 117 mm in length and 52 mm in width, providing a compact profile for a range of door sizes. It is manufactured from either SUS 304 or SUS 316 stainless steel, which offers corrosion resistance in indoor and outdoor environments. The handle base is constructed of iron‑plated white zinc, adding structural strength to the lever assembly. An ergonomic lever design gives a comfortable grip and a modern aesthetic.

The product line includes a variety of surface finishes that can be matched to interior décor, while the lever style is suited to high‑traffic applications. In the door‑hardware market, typical backset dimensions are 60 mm and standard ANSI/BHMA Grade 2 rating, ensuring compatibility with most commercial door preparations. Typical torque for secure mounting is around 5 Nm, and the knob weight generally falls between 300 g and 350 g. These industry norms help installers achieve consistent performance across projects.

The knobs are targeted at residential developers, commercial builders and architectural firms seeking reliable hardware. D & D Hardware offers flexible minimum order quantities and accepts T/T or L/C payment methods, with shipping options such as FOB or CIF from Chinese ports. Prospective buyers should request a sample and confirm packaging details before finalising the bulk purchase.

D & D Hardware Industrial Co., Ltd. is located in the Haitanwei Industrial Zone, Zhoujun Tangxi, Jiangmen, Guangdong Province, China, postal code 529000. The company is listed as an imported supplier and carries a harbor trust tier, indicating that it has been vetted for basic reliability. Its profile shows a response rate of 0 % and no recorded average response time, suggesting that communication may require proactive follow‑up. The firm specialises in door‑hardware components, with the door knob being one of its catalog items.

The supplier does not disclose additional corporate history, production capacity or client references in the listing, so buyers should request these details directly. Verification can be reinforced by asking for a recent factory photograph or a third‑party audit report. As the listing does not specify certifications, any required compliance certificates must be confirmed with the supplier before purchase. The company’s tier classification and trust level provide a baseline indication of its standing within the marketplace.