How to choose a good optical lens manufacturer?

How to choose a good optical lens manufacturer?
1. That must be a manufacturing plant
2. This factory has been established for a long time, which means they have the strength
3. Their company may not be globally renowned, simply because they may have just started doing foreign trade
4. Do they have a comprehensive quality improvement system, as it is the core of ensuring your quality.
5. Do they have a professional after-sales technical team. This involves smooth communication between you and the factory. We can solve the problems you want to know at any time.
6. What is their product delivery capability? This involves ensuring delivery time during large-scale deliveries.

Very good, we are an optical lens factory located in Xiamen, Fujian Province, China.
Our company has been established for 15 years.
We have IATF16949 and ISO14001 management system certificates.
The backbone of our sales team has been working in the lens industry for 10~25 years and is very professional.
We have fully automated production and testing equipment.
Choose us, an excellent Chinese lens supplier.