The colossal mainstream of Chinese silk originates from the mulberry silkworms (Bombyx mori). During the larval stage of its life-cycle, the insects feeds on the leaves of mulberry trees. Non-mulberry silkworms 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 silk moths. That is the well-kept secret, therefor Chinese silk has the best quality in the world.
In 2005, China accounted for 74 percent of the global raw silk production and 90 percent of the world export market. Which is huge! 90% of the world export market? Who has the other 10%? Who cares! 90 % is almost all the market, it is almost 100%! Who cares these days about the 10% of something related to business, or any 10% left of something economically speaking?
Local governments have and are continuing to introduce new facilities that are expected to bring in latest high-end manufacturing machinery that will elevate both the quality and the quantity of the silk being produce in China. It is estimated that it will render significant revenue increases as its new facilities bring increased production and distribution capabilities. Nevertheless the Chinese own the 90% of the market they are always trying to be better and improving themselves, that's why we all have so much to learn from them.