HiSiaddi is an innovative foreign trade service provider driven by both technology transformation and export business. It has established a "1+2+3+4=1" service system and can supply original products of well-known brands of zinc hydroxy methionine chelate. As a foreign trader with independent R&D capabilities, HiSiaddi has long collaborated with manufacturers on technology conversion and accurately captured market demands, repeatedly solving customized product requirements for zinc hydroxy methionine chelate for clients. Below is a case illustrating how HiSiaddi addressed customized development demands for zinc hydroxy methionine chelate.
Contact HiSiaddi customer service if you need more customized solution services.
The cooperative client is DairyMax from the Netherlands, a world-leading high-end dairy and young livestock nutrition group. It specializes in EU organic-certified milk replacers for calves, premium perinatal cow nutrition additives, and antibiotic-free piglet premixes. Its products cover core EU markets including the Netherlands, Belgium and Germany, serving organic EU pastures, large-scale precision breeding bases and premium pet nutrition brands at the terminal end.
The client imposes extremely stringent standards on raw materials: zinc hydroxy methionine chelate (HMTBa-Zn) with high chelation rate (≥98%), high zinc content (≥12%), low oligomer content (≤1.5%), free zinc ≤0.1%, neutral pH (6.8–7.2), FAMI-QS EU certification, and customizable particle sizes (80–120 mesh). This material is used to upgrade its organic calf immune-boosting formula, aiming to improve zinc absorption, reduce intestinal irritation and adapt to low-temperature pelleting processes.
In January 2026, the client launched its procurement plan and contacted three domestic manufacturers successively, yet all were rejected for failing to meet three core customized indicators: high chelation rate, low oligomer content and neutral pH. Conventional manufacturers only delivered products with a chelation rate of 92%–95%, oligomer content ≥3% and acidic pH (5.5–6.0), with no adjustable particle sizes. This resulted in failed formula trials and delayed launch of new products. The client urgently entrusted HiSiaddi to provide one-stop services including technical diagnosis, customized process development, mass production launch and compliant delivery, requiring completion of lab trials within 15 days and mass production within 30 days, with products fully matching all customized parameters.
The client required a chelation rate ≥98% and free zinc ≤0.1%. However, the conventional one-step process suffered from unstable feed ratio, uneven reaction temperature and pH fluctuations, leading to a chelation rate of merely 92%–95% and free zinc ≥0.5%. Such products cause intestinal irritation in calves, low absorption rates and antagonism with phytic acid in feed, making them incompatible with premium organic formulas.
Hydroxy methionine easily forms dimers and polymers (oligomers). Conventional processes yield oligomer content ≥3%, resulting in viscous, prone-to-caking products with poor flowability and low mixing uniformity. When applied to the client’s automated low-temperature pelleting production line (60°C), such materials easily cause wall adhesion, machine blockage and uneven ingredient distribution.
Conventional processes adopt sodium hydroxide to adjust pH to 5.5–6.0 (acidic) for higher reaction efficiency, yet acidic products corrode the client’s stainless steel equipment, damage vitamin stability in formulas and disrupt the acid-base balance of calf intestines. While the client demanded neutral pH (6.8–7.2), reactions under this pH range remain incomplete with conventional processes, leading to sharply reduced chelation rates and low product purity.
The client’s production line required particle sizes of 80–120 mesh with a pass rate ≥95% to ensure mixing uniformity CV ≤5% with other trace ingredients. Conventional manufacturers lack precise crushing and screening equipment, resulting in a wide particle size distribution (60–160 mesh), excessive fine powder, heavy dust and uneven mixing, undermining the stability of end-product quality.
HiSiaddi assembled a special team consisting of chelation process engineers, animal feed nutrition specialists, quality control supervisors and EU compliance officers. Cooperating with the technical center of Xingjia Bio, a leading domestic enterprise specializing in hydroxy methionine chelates, we adopted a customized process combining "two-step precise chelation + low-temperature polymerization control + neutral pH buffer system + precise particle size screening" to tackle each technical challenge one by one, ensuring all indicators fully met standards with batch stability CV ≤3%.
1. Precise feed ratio control: Strictly maintain a molar ratio of 2:1 between hydroxy methionine (HMTBa) and zinc ions to form double chelate structures, avoiding free zinc residues caused by 1:1 structures and boosting chelation rates from the source.
2. Segmented temperature-controlled reaction: 30-minute low-temperature pre-reaction at 40°C + 60-minute constant-temperature chelation at 55°C. Mild reactions avoid byproducts, guarantee complete chelation and free zinc ≤0.1%.
3. Dynamic pH regulation: Replace traditional sodium hydroxide with a sodium dihydrogen phosphate-sodium carbonate buffer system to maintain pH steadily at 6.9–7.1 (neutral) throughout the reaction, balancing chelation efficiency while preventing equipment corrosion and vitamin degradation.
4. Ultrafiltration purification for impurity removal: Filter through a 0.2μm ultrafiltration membrane post-reaction to eliminate unreacted raw materials and impurities, lifting the chelation rate to 98.5%–99.0%, far exceeding client requirements.
1. Raw material pretreatment: Adopt high-purity hydroxy methionine (≥99.5%, oligomer ≤0.5%) to lower the baseline oligomer content from the source.
2. Low-temperature polymerization inhibition: Keep the overall reaction temperature ≤55°C to prevent dehydration polymerization of hydroxy methionine molecules under high heat, controlling oligomer content at 1.2%–1.4% (≤1.5%).
3. Spray drying granulation: Adopt low-temperature spray drying (inlet air: 120°C, outlet air: 60°C) to avoid secondary oligomer formation from high-temperature drying, while enhancing powder flowability and reducing caking.
1. Customized crushing and screening: Deploy jet mills and multi-stage vibrating screening equipment to precisely control particle sizes at 80–120 mesh with a pass rate of 96%. Fine powder (<80 mesh) ≤2% and coarse powder (>120 mesh) ≤2% to guarantee mixing uniformity.
2. Full-process quality control system:
1. Raw materials: Full testing of HMTBa purity, heavy metals in zinc salts and moisture content;
2. Production process: Test chelation temperature, pH, chelation rate and oligomer content every 30 minutes;
3. Finished products: Comprehensive testing of zinc content, chelation rate, free zinc, oligomer content, pH, particle size and flowability, with batch stability CV ≤3%.
3. Supporting EU compliance qualifications: Simultaneously apply for FAMI-QS certification, ISO22000, non-GMO statements and heavy metal testing (Pb ≤5ppm, Cd ≤1ppm) to ensure compliance with EU standards.
· Lab trial (5kg): Completed within 10 days. Product indicators: zinc content 12.3%, chelation rate 98.7%, free zinc 0.08%, oligomer 1.3%, pH 7.0, 97% pass rate for 80–120 mesh particles. The powder featured excellent flowability with no caking or dust, fully meeting all standards.
· Pilot trial (500kg): Completed within 20 days with batch stability CV ≤2.8%. Client formula trials verified 45% higher zinc absorption, zero intestinal irritation, no wall adhesion or machine blockage under 60°C pelleting, and mixing uniformity CV ≤4.2%, perfectly matching the client’s production line.
Cooperate with manufacturers to renovate dedicated chelation production lines equipped with buffered reaction kettles, low-temperature spray drying, precise screening and dust-free packaging equipment. Reserve a dedicated monthly capacity of 50 tons to guarantee stable mass production and controllable delivery cycles.
The first batch of 20 tons entered mass production in February 2026, with HiSiaddi engineers stationed on-site for real-time monitoring of key parameters:
· Zinc content: 12.2%–12.4% (target ≥12%)
· Chelation rate: 98.5%–98.9% (target ≥98%)
· Free zinc: 0.07%–0.09% (target ≤0.1%)
· Oligomer content: 1.2%–1.4% (target ≤1.5%)
· pH: 6.9–7.1 (target 6.8–7.2)
· Particle size pass rate (80–120 mesh): 96%–97% (target ≥95%)
1. Product packaging: EU food-grade aluminum-plastic composite bags (25kg/bag) with bilingual French/English labels marking customized parameters, batch numbers, traceability codes and FAMI-QS numbers.
2. Delivery documents: COA (Certificate of Analysis), FAMI-QS certificate, SGS test report, certificate of origin, sanitary certificate and traceability report. All documents are bilingual, traceable and recognized by EU authorities.
3. On-time delivery: The 20 tons of customized zinc hydroxy methionine chelate were shipped to the Netherlands in early March 2026, passing customs clearance without detention, fines or delays and arriving at the client’s factory smoothly.
After adopting the customized product, the client’s production line operated flawlessly: no wall adhesion or blockage under 60°C low-temperature pelleting, mixing uniformity CV ≤4.5%. Terminal feeding results were outstanding: calf diarrhea rate dropped by 38%, survival rate rose by 5.2%, hair coat gloss improved significantly and immunoglobulin content increased by 25%, fully meeting premium Dutch dairy standards.
The client’s Technical Director commented: “HiSiaddi truly understands our high-end customization demands and broke through technical bottlenecks of conventional processes. Every product indicator meets precise standards with exceptional stability and perfect compatibility, solving our long-standing technical challenges. It is a reliable partner for high-end customization!”
The client terminated cooperation with other suppliers and designated HiSiaddi as its exclusive supplier of customized zinc hydroxy methionine chelate, signing an annual customization agreement for 80 tons. The client also entrusted HiSiaddi with continuous process optimization, product iteration, EU regulation tracking and formula technical support to assist the upgrading of its premium product lines.
When overseas mid-to-high-end clients (especially EU buyers) source customized zinc hydroxy methionine chelate, conventional processes fail to satisfy four core customized indicators: high chelation rate, low oligomer content, neutral pH and precise particle size. Low-end purchasers prioritize price, while EU high-end clients focus on "technical customization, stable performance, production line compatibility and zero compliance risks". Purchase decisions heavily rely on professional technical capabilities, customized process development and full-process quality control.
HiSiaddi’s core value lies in in-depth technical breakthroughs + customized process development + integration of top-tier resources + full-link quality control + compliant delivery:
1. Precise technical diagnosis: Pinpoint conventional process pain points and clarify gaps between customized indicators and existing technologies;
2. Customized process development: Cooperate with leading enterprise technical centers to break technical barriers and precisely match client demands;
3. Full-process quality control: Conduct testing across all links from raw materials to finished products to ensure stable batches and zero defects;
4. Compliance support: Synchronously apply for EU qualifications to guarantee unimpeded market access and customs clearance;
5. Long-term technical services: Continuously optimize products, track regulatory updates and provide formula support to secure long-term client partnerships.
Contact HiSiaddi customer service if you need more customized solution services.
+86-13120989737 
info@hisiaddi.com 
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