Quality control in Tongjin Technology

Quality control (QC) is a process that businesses use to ensure that a product or service meets quality standards or customer requirements. QC can involve: 
  • Benchmarking
  • Examining manufacturing procedures
  • Testing products
  • Reviewing the quality of all factors involved in production
  • Testing units to determine if they meet the specifications for the final product

IATF 16949 – the quality management system for the automotive industry

The automotive industry is one of the most challenging, operating under extreme quality, lead time and cost pressures. As such, the world’s leading automotive OEMs insist that their suppliers are accredited to IATF 16949 — the automotive benchmark for quality management.  
Tongjin Technology is one of the few IATF 16949 accredited chemical etching suppliers, which proves the stability and capability of our processes. We remain one of the few reputable production etching suppliers to the sector.

ISO 9001 – is an international standard that specifies requirements for a quality management system (QMS).

It's the most widely used QMS standard in the world, with over 1.1 million certificates issued to organizations in 178 countries. ISO 9001 aims to help organizations meet the needs of their customers and other stakeholders more effectively. It does this by:
  • Building a framework to ensure consistent quality in providing goods and/or services
  • Demonstrating the ability to consistently provide products and services that meet customer and regulatory requirements
  • Enhancing customer satisfaction

How we control the quality

Raw material inspection
Pre-production inspection
During production inspection
Pre-shipment inspection
Two dimensions test
hardness test
Salt spray test
Hop Test

Customer Reviews

I am extremely impressed with the precision...
Swapnil from United StatesWednesday, Jan 26, 2019
"I am extremely impressed with the precision and quality of the chemical etching performed by your team. The intricate designs on our metal components were etched flawlessly, exceeding our expectations. Thank you for delivering such a high-quality product."
Your chemical etching service has significantly improved the durability...
Sarah from United KingdomWednesday, Jan 20, 2020
"Your chemical etching service has significantly improved the durability and functionality of our products. The etched patterns not only enhance the aesthetics but also provide excellent grip and tactile feel. Our customers are thrilled with the results, and we couldn't be happier with your exceptional craftsmanship."
We have been relying on your chemical etching expertise for several projects...
Eduardo from ItalyWednesday, Mar 16, 2022
"We have been relying on your chemical etching expertise for several projects, and each time, you have consistently delivered outstanding results. Your attention to detail, quick turnaround time, and excellent customer service make you our preferred choice. Your commitment to excellence is commendable."
has given our brand a unique edge in the market...
Taner from TurkeyFriday, April 26, 2023
"The chemical etching performed by your team has given our brand a unique edge in the market. The intricate logos and designs etched onto our products have attracted significant attention and set us apart from our competitors. We appreciate your professionalism and skill."

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