Heroin- producing laboratories are located close to the main opium-producing areas, and precursor chemicals, necessary for the conversion of opium into heroin, are transported through the surrounding countries to the main production areas located in Myanmar.
在鸦片主要生产区附近设有制造海洛因的加工场，将鸦片制成海洛因所需的前体化学品通过周边国家被运到缅甸境内的主要生产区。