Air-Purifying Respirators

A: Our air-purifying facepieces and compatible filter cartridges are manufactured under ISO 9001 quality management standards and tested to European CE standards (EN 140 for half masks, EN 136 for full face masks, and EN 143 / EN 14387 for filters) as well as national standards such as GB 2890 and GB 2626. Complete test reports and CE type-examination certificates are available upon request for compliance verification.

A: No. Air-purifying respirators filter ambient air and do not supply oxygen. They must only be used in workplaces where atmospheric oxygen concentration remains strictly above 19.5% by volume and where contaminant concentrations do not exceed IDLH (Immediately Dangerous to Life or Health) limits.

A: Particulate filters must be replaced when breathing resistance increases noticeably or physical damage/soiling occurs. Chemical cartridges must be replaced according to a scheduled change-out plan, upon reaching breakthrough time, or immediately when the user detects odor, taste, or irritation. Shelf life for unopened, factory-sealed cartridges stored within specified conditions is typically 3 to 5 years from the manufacturing date.

A: We offer comprehensive OEM/ODM manufacturing services for volume distributors and brand owners. Custom options include private-label laser marking or molding on the facepiece, custom strap colors, branded packaging boxes, multi-language user manuals, and tailored master carton configurations.

A: Raw materials undergo incoming inspection for durometer, tensile strength, and purity. Every facepiece production lot undergoes automated seal pressure tests, valve seat alignment checks, and dimensional inspection. Regular fit testing and total inward leakage (TIL) validation are conducted in our internal laboratories using calibrated quantitative testing equipment.