ISO 8 chav huv yog qhov chaw tswj hwm tsim los tswj cov qib tshwj xeeb ntawm huab cua huv thiab yog siv dav hauv kev lag luam xws li tshuaj, biotechnology, thiab electronics. Nrog rau qhov siab tshaj plaws ntawm 3,520,000 particles ib lub cubic meter, ISO 8 chav huv yog cais raws li ISO 14644 ...
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