Non-mulberry silkworm cocoon production in China primarily focuses on wild silk from the Chinese Tussah moth (Antheraea spp.).
This moth typically feeds on trees (e.g. oaks) and its larvae spin coarser, flatter, yellower filament than the mulberry silkworms.
[1] Following World War II, the redevelopment of the silk industry was one of the few economic successes of China's Nationalist government under Chiang Kai-shek.
These government incentives include such as land policy exemptions, tax breaks, project prioritization (priority in review and approval of applications), and Energy discounts (upon approval, company can receive discounts of fees related to water, electric, gas, etc.
Foreign investment has optimized the structure of local silk companies, and brought in new technology.