In lower-income countries, the informal sector is often achieving recycling rates of 20 to 30% for MSW. Most secondary materials come from industry and most are utilized inside national boundaries, but a sharp increase in the availability of materials from MSW recycling since the 1990s, together with the relocation of much of the world’s manufacturing industry to Asia in general and to the People's Republic of China (PRC) in particular, has led to an increasingly transboundary and even global market.