1. Product advantages Zhongqi Guangdong Silicon Material Co., Ltd. specializes in developing high-purity food-grade synthetic amorphous silicon dioxide (inert dust for grain storage), compliant with FDA 21 CFR food contact standards. Specifically designed to address the critical challenges of chemical pesticide residues, pest resistance, and equipment corrosion in grain protection, this product achieves pure physical pest control without chemical toxicity or fumigation, through precisely controlled particle size (D50 3–12μm) and optimized BET surface area (120–220m²/g). Certified to GB 25576-2020, LS/T 1227-2022, and FDA 21 CFR standards, its core features include: - FDA 21 CFR compliant food-grade safety — ultra-low heavy metals (Pb ≤10ppm, As ≤3ppm); safe for direct grain contact, no residue concerns on raw grain - Pure physical mode of action — abrades insect cuticle wax layer, causing dehydration; no chemical toxins, no resistance development - Broad-spectrum efficacy — effective against Sitophilus oryzae, Sitophilus zeamais, Tribolium castaneum, Rhyzopertha dominica, Plodia interpunctella, and other major stored-grain pests - Long-lasting protection — 6–12 months efficacy under dry conditions; outperforms conventional chemical protectants - Non-corrosive — chemically inert; does not damage steel silos, ventilation ducts, or monitoring equipment - Customizable particle size — D50 3–12μm adjustable for aerosol spraying, grain admixture, or barrier line application - GMP-certified manufacturing facility - Pre-sales sampling + on-site technical guidance - Serving grain depots, flour mills, rice processing, and feed storage industries; export markets in Southeast Asia, Europe, Americas, Middle East, and Russia/CIS. --- 2. Factory advantages Zhongqi Guangdong Silicon Materials Co., Ltd., a national high-tech enterprise and provincial-level specialized, refined, unique, and innovative enterprise, has been dedicated to the industry for over two decades. The company holds 17 patented technologies and operates a GMP-certified production base. Equipped with advanced testing instruments including atomic fluorescence spectrometers, laser particle size analyzers, and BET surface area analyzers, it has established a comprehensive quality control system comprising 26 inspection processes spanning raw materials to finished products. The company has obtained ISO22000 certification for food safety management systems, with full traceability from silica source to final packaging. --- 3. Packing for shipment - Standard packaging: 10kg / 25kg woven bags with food-grade PE inner liner; 1000kg jumbo bags available upon request. - Waterproof design: composite film valve bag + outer PE layer; or PE inner film bag + plastic woven bag, strictly sealed to prevent moisture ingress during ocean freight. - Storage and transportation requirements: store in cool, dry environment below 70% RH; shelf life of 24 months; non-hazardous chemical (non-flammable, non-corrosive), supports global sea/air/land transportation without dangerous goods surcharges. - Labeling specification: each package marked with food additive information, CAS No. 7631-86-9, E551, production license number, batch number, and net weight; custom private labeling available per customer requirements. - Application dosage reference (per LS/T 1227-2022): empty warehouse aerosol 0.25–0.5g/m³; grain admixture ≤1.2g/kg; barrier lines 120g/m². --- 4. Qualifications and Honors - FDA attestation (21 CFR) — food contact substance compliance - FSSC22000 - ISO22000:2018 - ISO9001:2015 - SHC HALAL - OU KOSHER - FAMI-QS - SEDEX - Food additive production license - Feed additive production license - National high-tech enterprise - Specialized, refined and new enterprise in Guangzhou - 17 patents from the State Intellectual Property Office - Compliance with LS/T 1227-2063 Technical Specification for Inert Dust Pest Control in Grain Storage