By the China GB2626-2006 KN90 standard.

The V type fold structure, adjustable nose clip, two sizes available for people with different face. China manufacture, economical and practical, convenient wearing.

* for polishing, grinding, sawing, bagging, dry chemical treatment, emergency reserve, laboratory protection, food processing, mineral processing, agricultural, cleaning, general maintenance, other non oily environments in the dust.

The packaging: 25 / bag, 40 bags / boxes.