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You are here: Home » About US » Commitment to Quality
To ensure the quality consistent, D&D inspect and well-control each procedure throughout the mass-production.
  1. To ensure the material component follows the ASTM standard, D&D use spectrometer to check the stainless steel raw material before production.
We also do the hardness testing for the product if necessary.
spectrometer
2. D&D use measuring tools to check the product in each procedure throughout the mass-production to ensure the dimension of product meet customer’s requirement.
measuring tools
3. D&D arrange Quality control department in each step of the mass-production to ensure each production fulfill their duty to produce well-product.

4. D&D use salt spray testing machine to test the product, to ensure it meet specific corrosion-resistance requirement.
salt spray


5. D&D test products on testing machine very often to ensure products meeting CE / UL / ANSI standard.
Hinge testing-D&D

6. D&D use 2D and 3D drawing to communicate with customer, which is clearly and accurately.

Base on above six quality control steps, D&D proudly says that “D&D commitment to quality”
 

architectural hardware manufacturer-D&D hardware China

Contact Info

:+86-139 2903 7292   David Jian

: +86-750- 3856396

 : sales@dndhardware.com 

:  No.4 Bldg, Street 33, West Gaoxin Rd, High-tech Zone, Jianghai Dist. Jiangmen City, Guangdong, China 

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