The core grade of high-efficiency filters is H13-H14 (Chinese/European standard) or MERV 16-17 (American standard), with a filtration efficiency of ≥ 99.97% for 0.3 micron particles. Mainstream ...عرض المزيد
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ZJNF national standard Design cleanroom Laminar 4ft Flow Hood hepa air filter for air cleaningequipment