China's Shenzhen shuts electronics market to fight COVID outbreak (yahoo.com)

POET's Design and Development Center is located in Shenzhen.

Back in March, 2022, Shenzhen was locked down for a week in response to a COVID-19 outbreak in Shenzhen.  POET's response back in March of this year to that situation back in March, 2022, was as follows:

POET Technologies Responds to Shenzhen Lockdown (globenewswire.com)

At that time, in March, Dr. Venkatesan responded:

“Over the past two years, we have established redundancy for critical activities in Singapore, Shenzhen and Allentown, Pennsylvania, both to accelerate development and to cope with COVID-19 lockdowns,” reported Dr. Suresh Venkatesan, CEO of POET Technologies. “On Sunday, March 13, 2022, our operation in Shenzhen, China was notified that it would be shut down until at least March 20, 2022, due to a COVID-19 outbreak in that city. We promptly tasked both Singapore and our joint venture, Super Photonics Xiamen, with the task of continuing to build samples for customers. Because we have been well-prepared for such a contingency, we do not believe this temporary lockdown will have any effect on our planned delivery schedule to customers, prospective customers or business partners.”