HiSiaddi is an innovative foreign trade service provider driven by both technology commercialization and export business. We have established a service framework defined as "1+2+3+4=1" and can supply original LS-119 light stabilizer products from multiple well-known brands. As a tech-enabled foreign trade enterprise, HiSiaddi has repeatedly collaborated with manufacturers on technology transformation and accurately captured market demands to resolve customized development requests for LS-119 light stabilizers. Below is a case study of HiSiaddi addressing customized LS-119 product requirements.
For inquiries regarding customized development services, please contact HiSiaddi customer service.
Client: M-tech Automotive Materials Srl (referred to as "Company M"), Italy Industry Positioning: A core European supplier of mid-to-high-end modified plastics for automotive applications, specializing in premium TPO/PP exterior automotive parts including bumpers, side skirts and mirror housings. The company supplies ultra-luxury brands such as Ferrari, Maserati and Lamborghini, with extremely stringent requirements for weather resistance, thermal stability, low migration and color stability of additives. Low-end generic products are rejected entirely.
Sourcing Requirement: Customized LS-119 light stabilizer for high-end modified automotive exterior materials, with core customized indicators far exceeding national standards and generic grade specifications:
· Appearance: Pure white powder (generic LS-119 is mostly off-white or pale yellow), free of impurities
· Thermal Stability: No decomposition or discoloration after 5 minutes at 230°C (generic grades have a maximum tolerance of 210°C)
· Acid Resistance: ≥95% stability under weak acid environment at pH 4.0 (generic grades only reach 85%)
· Low Volatility: Volatile matter ≤0.2% (generic grades allow up to 0.5%)
· Compliance: Full compliance with REACH, RoHS and ELV directives; complete PPAP documentation package tailored for the automotive industry is required
Core Dilemma: Company M contacted three major Chinese LS-119 manufacturers (Liansheng, Jiadejia, Dedazhicheng), yet none could meet the customized indicators—products suffered yellow discoloration, insufficient thermal stability or poor acid resistance. Factories declined dedicated development citing mass production of generic grades, high customization costs and immature processes. Company M’s project stalled, exposing the brand to breach-of-contract risks for its ultra-luxury clients, prompting an urgent request for technical support from HiSiaddi.
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Performance indicators exceed national standards; generic grades fail to match requirements Generic LS-119 grades (e.g., UNITECHEM LS-119 from Liansheng, JADEWIN LS-119 from Jiadejia) only satisfy conventional polyolefin applications, featuring 210°C thermal stability, 0.5% volatile content, 85% acid resistance and pale yellow appearance. These fail to withstand high-temperature injection molding and long-term weather exposure under weak acid conditions (car wash fluids, acid rain) required for premium automotive exterior components.
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No mature processes for customized development; manufacturers refuse R&D investment Leading manufacturers focus on mass production of generic grades due to low costs and large sales volumes. No ready-made formulas or production processes exist for customized LS-119 targeting the high-end automotive sector, which requires reworking catalysts, reaction temperatures and purification procedures. High R&D expenses and low efficiency for small-batch runs lead manufacturers to reject standalone development projects.
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High compliance thresholds for the automotive industry with complex documentation systems Company M requires a full PPAP package (including composition declarations, test reports, production process control records and batch traceability reports) rather than standard COA documents. Compliance with the ELV End-of-Life Vehicles Directive (zero heavy metal detection) is also mandatory, while generic grades lack complete compliance documentation to pass supplier audits for ultra-luxury brands.
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Small-batch, multi-batch delivery demands high production flexibility Initial monthly demand for the project stood at only 500kg, split into 2–3 shipments, with adjustable indicators aligned to the client’s R&D schedule. Manufacturers declined order acceptance citing unprofitable small-batch production and scheduling difficulties, leaving Company M deadlocked with no viable customization or sourcing options.
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Core Competencies: Eight years of dedicated experience in customized automotive additives, with collaborative access to the R&D center of Lianlong, pilot production base of Liansheng and technical department of Jiadejia. We offer end-to-end capabilities covering demand decomposition, formula development, lab trials, pilot scaling, mass production and compliant delivery, focusing exclusively on mid-to-high-end European automotive material clients rather than low-volume generic orders.
Working alongside Company M’s chief technical engineer, we refined test methodologies and qualified thresholds for five core indicators, defining clear benchmarks:
· Appearance: CIE Lab whiteness value ≥92 (generic grades only reach 80–85)
· Thermal Stability: TGA test residue rate ≥99.8% at 230°C
· Acid Resistance: Purity retention rate ≥95% after 24-hour immersion in 5% acetic acid solution
· Volatile Matter: ≤0.2% after 2 hours at 105°C
· Impurities: Heavy metal ions (Pb, Hg, Cd) ≤1ppm, free of mechanical contaminants
Root cause analysis of generic LS-119 performance deficiencies: Unstable -NH- groups in the molecular structure, simplistic purification processes and high catalyst residues lead to yellow discoloration, poor thermal stability and weak acid resistance.
Custom R&D roadmap confirmed: Optimize molecular structure via alkyl substitution of -NH- groups, upgrade purification processes (secondary recrystallization + molecular distillation), and adopt eco-friendly catalysts to reduce metal residues.
1. Formula Lab Trials (15 days, joint execution by E Company and Lianlong R&D Center)
· Molecular structure adjustment: Unstable -NH- groups substituted with N-butyl groups to enhance molecular stability, boosting acid and thermal resistance
· Reaction condition optimization: Reaction temperature lowered from 180°C to 165°C to reduce side reactions and prevent oxidative yellowing of products
· Catalyst replacement: Eco-friendly organotin catalysts adopted to replace traditional heavy metal catalysts, cutting metal residues to meet ELV Directive requirements
Lab trial results: Whiteness 93, thermal stability up to 232°C, acid resistance 96.2%, volatile matter 0.18%—all indicators passed initial laboratory testing at Company M.
1. Pilot Scale-Up (20 days, Liansheng Pilot Production Base) Mitigated scale-up effects observed from lab to mass production: Precise control of reactor temperature uniformity (±1°C), adjusted purification rates and optimized crystal particle size. Key breakthrough: Secondary recrystallization paired with molecular distillation completely removed low-molecular impurities and colored byproducts, delivering pure white powder free of contaminants.
Third-party testing via SGS and secondary verification by Company M confirmed stable compliance across all indicators, with batch consistency RSD ≤0.5%—far superior to generic grades (RSD ≤2.0%).
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Flexible Scheduling for Small-Batch Custom Mass Production Coordinated Liansheng to allocate a dedicated high-end customization production line with priority scheduling for Company M’s orders, resolving the unprofitability barrier of small-batch manufacturing. Full-process production monitoring: DCS systems record reaction temperature, pressure and duration, with sampling and testing every 2 hours to guarantee batch consistency. Custom packaging: 25kg bags lined with aluminum foil for moisture and oxidation resistance; outer cartons printed with Company M’s exclusive shipping marks and batch traceability codes to align with automotive supply chain management standards.
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Development of Exclusive Automotive Compliance Documentation Package Compliance testing: Full-scope SGS testing conducted per REACH, RoHS and ELV directives with English-language test reports issued. PPAP documentation compilation: 12 formal documents including Certificate of Conformity (CoC), production control plans, batch traceability logs, quality assurance certificates and technical benchmarking reports, meeting audit standards for Ferrari and Maserati suppliers. Compliance declarations: REACH pre-registration certificates, RoHS statements and ELV heavy-metal-free declarations, all stamped with manufacturer and SGS certification seals.
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Complimentary supply of 20kg customized LS-119 samples for Company M’s TPO bumper compound trial production. On-site trial support: HiSiaddi technical engineers traveled to Company M’s Italian facility to provide on-site guidance on addition ratio (0.25%), mixing temperature (190°C) and injection molding parameters. Trial production outcome: Molded parts exhibited high whiteness, zero migration, no yellow discoloration after 5,000-hour xenon arc weathering testing and stable mechanical properties, passing all full-scope testing requirements of Ferrari. Technical enablement: Provided synergistic formulas combining customized LS-119 with resins, antioxidants and pigments to improve overall system stability and reduce comprehensive material costs.
100% fulfillment of customized specifications: Successfully developed pure white, high-heat-resistant, acid-stable, low-volatility customized LS-119, with all five core indicators met—some metrics outperforming imported BASF Chimassorb 119. Consistent bulk deliveries: Volume procurement launched in Q4 2025 with average monthly purchases of 800kg split into two shipments; cumulative orders exceed 5 metric tons with zero quality complaints, earning high recognition from Company M for batch uniformity. Cost optimization & shortened lead times: Custom LS-119 pricing is 30% lower than equivalent BASF imports, with lead times reduced from 8 weeks to 3 weeks, significantly cutting Company M’s procurement expenses and inventory pressure. Deep long-term exclusive partnership: Company M designated HiSiaddi as its sole Chinese supplier for high-end customized LS-119, with subsequent orders covering customized auxiliary additives including Light Stabilizer 622, Antioxidant 1010 and UV Absorber UV-327. Industry reputation expansion: Company M recommended HiSiaddi to modified material suppliers for Lamborghini and Alfa Romeo, facilitating market penetration across Europe’s premium automotive additive sector.
The client is a core Italian supplier of modified plastics for ultra-luxury automotive brands (Ferrari, Maserati), prioritizing extreme performance, full regulatory compliance and stable supply over low-cost alternatives. Primary pain points include underperforming generic grades, manufacturer reluctance to undertake custom development, strict automotive compliance barriers and logistical challenges of small-batch orders—representing classic high-end specialty chemical customization challenges. HiSiaddi delivered tech-driven solutions, resource integration and flexible end-to-end services by partnering with leading manufacturer R&D centers to overcome technical bottlenecks and build exclusive compliance frameworks, enabling turnkey customized development from concept to mass production. Our core service offering extends beyond product delivery to integrated technical solutions, regulatory compliance backing and long-term technical enablement, evolving from a pure trading enterprise into a strategic technical partner for mid-to-high-end clients and securing long-term exclusive cooperation.
For inquiries regarding customized development services, please contact HiSiaddi customer service.
+86-13120989737 
info@hisiaddi.com 
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