I noticed that Suresh mentioned Hengtong....."one of the people we talk to routinely".
I also noticed that Hengtong has a joint venture with Rockley.
"Hengtong Rockley Technology Co., Ltd. is a joint venture established by Hengtong Optic-Electric Co., Ltd., China and Rockley Photonics Limited, UK. Hengtong Rockley designs and manufactures high-end optical modules. It is also committed to the design of Silicon Photonic chips and their integration, packaging, and testing, for improved competitiveness of optical module design and manufacturing."
HENGTONG GROUP CO.,LTD.