>China doesn't have a Zeiss

It has the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP)

Founded 1952. One of its things:

>4-Metre Silicon Carbide (SiC) Mirror: CIOMP successfully manufactured the world's largest single-piece Silicon Carbide mirror blank. It provides the optical backbone for high-resolution space telescope imaging systems

Apparently carbide mirrors are used for EUV lithography.

Nature article + pic of mirror https://www.nature.com/articles/s41377-022-01050-w