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Working principle and application of VOC: Volatile Organic Compounds(shared by Shandong Xiaoyuan Environmental Protection Technology Co., Ltd, website:https://www.gaslyst.com) I. Concept of VOCs VOCs (Volatile Organic Compounds) • Environmental Impacts: • Atmospheric photochemical reactions generate ozone and secondary particulate matter • Nerve damage, long-term exposure can cause cancer ⸻ II. Working Principle of VOC Ceramic Catalysts 1. Oxidation and decomposition of VOC gases into harmless substances: • CO₂ (carbon dioxide) • H₂O (water) • Core reaction: Oxidation reaction (usually between 250–450°C) VOC + O₂ → CO₂ + H₂O 2. Catalyst Composition 1. Support Material • Commonly used ceramic honeycomb support (cordierite or alumina ceramic) • Characteristics: • High specific surface area (beneficial for catalyst dispersion) • High thermal stability • Corrosion resistance 2. Coating/Active Components • Noble metal catalysts: • Mainly platinum (Pt) and palladium (Pd) • Pt, Pd, or a Pt/Pd combination can be selected according to the type of VOC. • Non-precious metal catalysts: • Active oxides, such as MnO₂, Co₃O₄, CuO • Functions: • Provides oxidation active sites, accelerating VOC decomposition • Reduces reaction temperature, improving conversion efficiency 3. Working Mechanism • Adsorption-Reaction-Desorption Mechanism: 1. VOC molecules are adsorbed on the catalyst surface. 2. Under the action of precious metals or active oxides, they undergo oxidation reactions with oxygen. 3. CO₂ and H₂O are desorbed from the catalyst surface. • Role of promoters/supports: • Ceramic provides high surface area and thermally stable structure. • Modifiable oxides (CeO₂, ZrO₂) can store oxygen, improving low-temperature oxidation capacity. ⸻III. Applications of VOC Ceramic Catalysts 1. Automobile exhaust treatment • 2. Industrial waste gas treatment • 3. 4. Chemical process exhaust gas • ⸻IV. VOC VOC conversion rate can reach over 90% High temperature resistance 600–800°C Low pressure drop honeycomb structure reduces exhaust gas drag and provides long lifespan. The noble metal catalyst is bonded to a stable support with a lifespan of 5–10 years. Customization is available, adjusting the Pt/Pd ratio or using non-noble metal formulations based on VOC type.

How to change the catalytic converter(shared by Shandong Xiaoyuan Environmental Protection Technology Co., Ltd, website: https://www.gaslyst.com） I. Preparations Before Replacement 1. Safety Tools and Equipment: • Jack and support frame • Socket wrench, open-end wrench, universal joint • Non-slip gloves, safety goggles • WD-40 or other lubricant (to prevent bolts from rusting) • New catalytic converter (model matching original) 2. Vehicle Preparation: • Park on a level surface • Engage the handbrake • Ensure the engine is completely cooled (catalytic converter temperature is very high, easily causing burns) • Disconnect the negative terminal of the battery to prevent accidental triggering of the oxygen sensor alarm 3. Spare Parts: • New catalytic converter • New gasket • If damaged, the oxygen sensor (O2 sensor) may need to be replaced. ⸻II. Replacement Steps 1. Locate the Catalytic Converter • The catalytic converter is usually located after the exhaust manifold and before the muffler. • In diesel vehicles, it may be before the DOC and DPF. • Note the oxygen sensors before and after the catalytic converter; they need to be removed during replacement. 2. Remove the Oxygen Sensor • Use an O2 sensor socket or open-end wrench to unscrew it counterclockwise. • Be careful not to damage the sensor wiring harness. 3. Loosen the catalytic converter mounting bolts. • The catalytic converter is usually fixed to the exhaust pipe with flange bolts. • Spray lubricant on rusted bolts and wait 5–10 minutes. • Use a socket wrench to loosen slowly, do not use excessive force to avoid breakage. 4. Remove the old catalytic converter. • Remove it gently, being careful not to damage the exhaust pipe and suspension bracket. • Check if the flange sealing surface is flat; repair any corrosion or deformation. 5. Install the new catalytic converter. 1. Install the new gasket (ensure alignment). 2. Install the new catalytic converter, first hand-tightening the mounting bolts to ensure correct positioning. 3. Then use a wrench to tighten evenly, avoiding overtightening to prevent flange deformation. 6. Reinstall the oxygen sensor. • Use an O2 sensor socket wrench to screw it back on with moderate torque. • Be careful not to twist the sensor wiring harness or allow it to come into contact with high-temperature components. 7. Check. • Confirm that the catalytic converter is securely fixed and the oxygen sensor connection is normal. • There are no obvious gaps in the exhaust pipe. • Reconnect the battery negative terminal. ⸻III. Precautions 1. Avoid high-temperature operation: The catalytic converter's temperature can reach 400–600°C immediately after engine shutdown. 2. Ensure model compatibility: Different vehicle models have different catalytic converter apertures, lengths, and oxygen sensor interfaces. 3. Environmental requirements: Removed catalytic converters contain precious metals and should be recycled according to local regulations. 4. Engine fault codes (MIL): • After replacement, P0420 or similar codes may appear, requiring clearing the fault codes or waiting for self-learning. 5. Do not forcefully strike: The ceramic inside the old catalytic converter is fragile; avoid allowing fragments to enter the exhaust pipe. 6. Torque requirements: • Flange bolts are generally recommended at 20–40 Nm (depending on the vehicle model). • Oxygen sensor torque is generally 30–40 Nm. ⸻ Tips: • If the catalytic converter is only partially blocked, you can try cleaning or high-temperature regeneration first, but severe blockage still requires replacement. • For diesel vehicles, note that the catalytic converter after the DPF (DOC) and the oxidation catalytic converter are usually replaced or inspected together to ensure regeneration efficiency.

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd(website: https://www.gaslyst.com). Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier,Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products. We are specializing in manufacturing honeycomb ceramic catalyst carriers of various sizes, metal carriers, universal three-way catalytic converters, and universal kits for three-way catalytic converters, including catalysts meeting high standards such as Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. OEM and ODM available. Shandong Xiao yuan Environmental Protection Technology Co. is committed to becoming a leading company in China's environmental protection technology sector, promoting the development and application of green environmental protection technologies, contributing to the sustainable improvement of the ecological environment, and creating a cleaner and better future for society.

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd(website: https://www.gaslyst.com). Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier, Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd. Specializing in Catalyst carrier, metal catalyst carrier, Three-Way Catalytic Converter, Three-Way Catalytic Converter Universal Package, Three-Way Catalytic Converter Ceramic Carrier, Automotive Ceramic Core Carrier,Truck Ceramic Inner Core Carrier, Metal Iron Core Inner Core Carrier, Automotive Emission Specific Products.(https://gaslyst.com) Honeycomb ceramic catalyst carriers have a wide range of applications, primarily including the following: 1. Automotive Exhaust Purification • Serves as the core component of three-way catalytic converters. • Catalytically oxidizes and reduces harmful gases such as CO, HC, and NOₓ, achieving environmental emission standards. 2. Industrial Waste Gas Treatment • Treats pollutants such as VOCs (volatile organic compounds), NOₓ, and CO generated in industry. • Used in waste gas purification systems for the chemical, coating, pharmaceutical, and electronics industries. 3. Denitrification (SCR) Systems • Utilizes selective catalytic reduction (SCR) technology in coal-fired power plants, cement plants, and boilers to remove nitrogen oxides. • Typically carries active components such as V₂O₅–WO₃/TiO₂. 4. Municipal Waste Incineration Flue Gas Purification • Used for high-temperature flue gas purification and dioxin emission control. 5. Chemical Catalytic Reaction Supports • Catalyst supports used in industrial reactions such as ammonia synthesis, methanol to olefins (MTO), and alkane dehydrogenation.

Shandong Xiao Yuan Environmental Protection Technology Co.,ltd is located in the Green Kinetic Energy Industrial Park in Guanchang Town, Ningjin County, Dezhou City, Shandong Province, with a factory area of 5,000 square meters. primarily produce honeycomb ceramic catalyst carriers of various sizes, metal carriers, universal three-way catalytic converters, and universal kits for three-way catalytic converters, including catalysts meeting high standards such as Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. We support customization to meet your specific requirements and accept small batch orders for product testing. We guarantee the quality and durability of our products. Shandong Xiao ryan Environmental Protection Technology Co. is committed to becoming a leading company in China's environmental protection technology sector, promoting the development and application of green environmental protection technologies, contributing to the sustainable improvement of the ecological environment, and creating a cleaner and better future for society. please find more information at: www.gaslyst.com

Shandong Xiaoyuan Environmental Protection Technology Co., Ltd. is committed to becoming a leading company in China's environmental protection technology sector.We promote the development and application of green environmental protection technologies, contribute to the sustainable improvement of the ecological environment, and create a cleaner and better future for society.

Wenzhou Legend Lock Co., Ltd. is a company specializing in manufacturing various types of automobile anti-theft locks. Its products include steering wheel locks, pedal locks, wheel clamps, gear lever locks, and multi-function steering wheel and pedal locks. In addition, we also produce a variety of locks such as motorcycle and bicycle locks, door locks, etc. The company was established in 2006, but we have more than 15 years of rich experience in the field of lock production.

Longkou lihe machinery will attend 2025 Automechanika Mexico--(7.16--7.18), welcome to participate this Autoparts show.( To find More auto parts manufacturers, you can link to ABIZTIME) Name: Automechanika Mexico Site: Mexico Date: 7.16-18 Booth: 4148 Products: Brake disc, brake drum

Longkou lihe Machinery(RDBRAKE) will attend Autopromotec in Bologna, Italy from May 21 to 24. Welcome to visit our booth. Name: Autopromotec(International Exhibition of Automotive Equipment and Aftermarket Products) Site: Bologna, Italy Date: 5.21-24 Booth: J15, Hall 18 Products: Brake disc, brake drum Welcome to the booth to meet the top brake disc manufacturer in China.

Longkou Lihe Machinery Parts Co., LTD(www.rdbrake.com) attended the AUTOMEC 2025 in Sao Paulo, Brazil. Booth No.: D275 Welcome the powerful auto parts buyers and importers to visit the booth.

2025 Longkou lihe machinery parts co.,ltd (rdbrake.com) global exhibition schedule. 4.22-26, Sao Paulo. Booth: D275 at AUTOMEC EXHIBITON BRAZIL. 5.21-24.5 at Autopromotec in Italy. Welcome to visit the booth.

Various Types of Bearing Brake Disc(source from :rdbrake.com) The primary function of bearing brake discs is to provide a stable and reliable surface for the brake pads to grip, thereby facilitating effective braking. When the brake pedal is pressed, the brake pads clamp onto the spinning brake disc, generating friction that slows down the wheel's rotation. The bearings within the brake disc assembly ensure smooth and consistent rotation, minimizing wear and tear on the braking system. Types of Bearing Brake Discs Ventilated Brake Discs: These discs feature internal vanes or vents that allow air to circulate, dissipating heat more efficiently. They are commonly used in high-performance vehicles and heavy-duty applications where heat management is crucial. Solid Brake Discs: These are simple, flat discs without internal vents. They are typically used in smaller or lighter vehicles where excessive heat build-up is less of a concern. Drilled and Slotted Discs: These discs have holes and grooves that enhance heat dissipation and improve braking performance, especially under extreme conditions. They also help in expelling dust and debris from the braking surface. Composite Brake Discs: Made from a combination of materials such as cast iron and carbon composites, these discs offer superior performance, reduced weight, and enhanced heat resistance. They are often found in high-end sports cars and racing applications. Maintenance of Bearing Brake Discs Regular maintenance of bearing brake discs is essential to ensure the longevity and reliability of the braking system. Key maintenance practices include: Inspection: Regularly inspect the brake discs for signs of wear, such as grooves, cracks, or uneven surfaces. This can prevent potential brake failure. Cleaning: Keep the brake discs clean from dust, dirt, and debris. Use appropriate cleaning solutions and tools to avoid damaging the surface. Lubrication: Ensure that the bearings are properly lubricated to reduce friction and prevent overheating. Use the recommended type and amount of lubricant for optimal performance. Replacement: Replace the brake discs when they show significant signs of wear or when they reach the manufacturer's recommended lifespan. Timely replacement can prevent more severe damage to the braking system.

Various Packaging way of Brake Discs( from RDBRAKE.COM) In the automotive parts industry, as the key safety components, the packaging design of brake discs is not only related to the product's market image, but also directly affects consumers' purchasing decisions. 1. Plastic bag Generally, brake discs are first packed in a plastic bag. The plastic bag will be sealed as customers' requirement. 2. Neutral white box and kraft paper box: low cost. 3. Neutral colorful box for brake discs 4, Colorful pizza box for brake discs 5, Pallet

2024 Automechanika Shanghai Wraps Up Successfully Recently, Longkou Lihe Machinery Parts Co., Ltd(RDBRAKE.COM). successfully participated in the 2024 Automechanika Shanghai. During the exhibition, we showcased our key products, including automotive brake discs, brake drums, and performance brake discs and drums for modified vehicles, attracting a large number of visitors and inquiries. During the event, we engaged with customers and partners from various countries and regions around the world. Through in-depth, face-to-face interactions, we not only strengthened relationships with existing customers but also identified numerous potential cooperation opportunities, laying a solid foundation for future market expansion. The exhibition was highly fruitful for us. Moving forward, we will take this success as an opportunity to continue innovating and to develop high-quality products that better meet market demands, creating greater value for our customers. We extend our heartfelt gratitude to all the customers, partners, and industry peers who visited our booth. We look forward to meeting you again at future industry events and working together to drive the sustainable growth of the automotive parts industry!

The top OEM brake disc manufacturer in China: https://www.rdbrake.com/ In 2008, the company expanded and registered the Rongdi trademark, and the company began to go abroad. In 2015, the company established the domestic market department and "Longzhu" brand has launched focusing on serving the domestic auto parts aftermarket. In 2021, Longzhu brand won the prize of "Most Competitive Brake Disc Brand" With the expansion of domestic market business, the company registered Yichen trademark. In 2021, Yichen brand was honored "Annual Breakthrough Brand"

Recently, Longkou Lihe Machinery Parts Co., Ltd. was honored with the "Supplier of the Year" award by its client, in recognition of its outstanding product quality, exceptional service standards, and deep collaboration with its partners. This marks the first time the client has ever presented this prestigious award to a supplier. As a long-term strategic partner, Longkou Lihe Machinery Parts Co., Ltd. has consistently delivered high-quality brake discs and brake drums through efficient supply chain management, advanced manufacturing techniques, and a rapid response to customer needs. These efforts have fully supported the client’s business growth in global markets. This achievement reflects the company’s relentless pursuit of lean production and continuous improvement. By strengthening its quality management systems, optimizing production processes, and embracing advanced manufacturing technologies, Lihe has provided increasingly competitive products to its customers. Additionally, the company remains steadfast in its customer-centric approach, addressing challenges promptly and meeting demands effectively, earning the client’s trust and recognition. General Manager of Longkou Lihe Mechanical Parts Co., Ltd., expressed his gratitude: “We are deeply honored to receive the ‘Supplier of the Year’ award. This is not only a recognition of our past efforts but also a motivation for future development. We will continue to uphold our principles of quality first and service excellence, working hand in hand with our partners to create greater value for the global braking system industry.” Introduction of LONGKOU Lihe Machinery Parts Co., Ltd. (website: rdbrake) The factory is located in the Youth Science and Technology Entrepreneurship Park, Shandong Province, China. It is a high-tech enterprise integrating the design, producing and exporting of automobile brake discs and brake hubs. The annual output reaches 3.8 million, of which 70% of the products are exported, and 30% are matched with domestic automobile manufacturers. The company covers an area of 60,000 square meters with 200 employees, including 69 employees with college degree or above, 43 professional and technical personnels (1 expert, 3 senior engineers, 8 engineers, and 18 technical staff). Strong technical strength has laid a solid foundation for product research, development and quality control. The company consists of 8 functional departments and four workshops (casting, rough machining, fine machining, and packaging). have successively obtained ISO/9001, IATF16949:2016, ISO/14001, ISO/18001 and ECE-R90 quality system certification.

(Disc Brake Systems: The Basics). (shared by RDBRAKE) Disc brakes are a type of brake that uses a disc-shaped rotor and a caliper with pads to slow or stop a vehicle. They are found on almost all modern cars and trucks, and for good reason. Disc brakes offer several advantages over drum brakes, the other common type of brake system. (How Disc Brakes Work) When you step on the brake pedal, hydraulic fluid is forced through the brake lines to the brake calipers. The calipers contain pistons that push against the brake pads, which are pressed against the rotor. The friction between the pads and the rotor slows the vehicle down. (Advantages of Disc Brakes) Better heat dissipation: Disc brakes are much better at dissipating heat than drum brakes. This is important because heat is a major enemy of brakes. When brakes overheat, they can fade, which means they lose their stopping power. Consistent braking performance: Disc brakes provide consistent braking performance, even in wet or dusty conditions. This is because the pads and rotors are always exposed to air, which helps to keep them cool and dry. Less brake fade: Disc brakes are less prone to brake fade than drum brakes. This is because the pads and rotors are always exposed to air, which helps to keep them cool. Easier to maintain: Disc brakes are easier to maintain than drum brakes. The pads and rotors can be replaced without having to take the wheel off. Types of Disc Brakes There are two main types of disc brakes: solid disc brakes and ventilated disc brakes. Solid disc brakes are the simplest type of disc brake. They consist of a solid disc of metal that is attached to the wheel hub. Ventilated disc brakes have a series of vanes or fins cast into the disc. These vanes help to dissipate heat more effectively. Maintenance Tips Inspect your brakes regularly. Look for signs of wear, such as worn brake pads or rotors. Replace your brake pads and rotors as needed. Don't wait until they are completely worn out. Have your brakes bled regularly. This will help to ensure that your brakes are working properly.

Brake discs, also known as brake rotors, are a crucial component of a vehicle's braking system. Surface treatments help improve wear resistance, reduce friction, and protect against corrosion. Here are some common surface treatment methods for brake discs. 1. Anti-rust oiling for brake discs This the simplest way to treat surface of brake discs. 2. Zinc plating for discs Zinc plating is a common surface treatment that involves electroplating a thin layer of zinc onto the brake disc. The advantages include: enhanced corrosion protection; aesthetic appeal; durability. 3. Geomet coating for brake discs Geomet coating is a water-based, chrome-free solution often used for brake discs. It has superior corrosion resistance and high performance. Being chrome-free, it is less harmful to the environment compared to traditional coatings. 4. Dacromet coating for brake discs Dacromet is another type of water-based coating, similar to Geomet, but with a different composition. 5. Black/Grey painting for brake discs You can choose all body spay, semi-spray, painting hats or painting edges. Selecting the appropriate surface treatment for brake discs is essential to ensure optimal performance, durability, and safety. Each method has its unique advantages, making it suitable for different applications and environmental conditions.

what's the Top 10 Brake Discs (source from rdbrake.com) Brake discs play a fundamental role in the safety and performance of a vehicle. Ensuring they are in fantastic quality is essential for excellent braking performance and overall vehicle safety. When looking for high-quality brake discs, it's important to consider factors such as performance, durability, and compatibility with your car. Here are ten highly recommended brake discs that are known for their performance and dependability: 1. Brembo UV Coated Disc Features: Known for its high performance and enduring durability. UV coating has excellent anti-corrosion properties. Best For: High-performance vehicles and enthusiasts. 2. EBC Brakes USR Slotted Disc Features: Slotted design improves heat dissipation and performance. They offer excellent stopping power and reduce brake fade. Best For: Daily driving and light vehicle used. 3. Zimmermann Sport Disc Features: High-quality cast iron with a strong braking surface. Offers fantastic brake performance and durability. Best For: Drivers seeking a balance between performance and comfort. 4. Hawk Performance Sector 27 Features: Precision-machined for enhanced braking performance. Offers advanced heat dissipation and reduced noise. Best For: Performance and track day use. 5. Power Stop Z23 Evolution Sport Features: Carbon-fiber infused ceramic composite. Provides excellent stopping power and reduces brake dust. Best For: Daily drivers looking for enhanced braking performance and minimal dust. 6. Stop Tech Sport Slotted Disc Features: Slotted design helps reduce brake pad glazing and improves performance in harsh conditions. Best For: Performance vehicles and spirited driving. 7. Bosch Quiet Cast Disc Features: Designed for quiet operation and smooth braking. Features a high-carbon alloy for improved performance. Best For: Vehicles where noise reduction is a priority. 8. Centric Premium Disc Features: Solid cast iron with a black electroplating coating finish for corrosion resistance. Designed for everyday use. Best For: Reliable performance for daily drivers. 9. R1 Concepts Drilled and Slotted Disc Features: Drilled and slotted design for enhanced heat dissipation and performance. Reduces brake fade and improves stopping power. Best For: High-performance and off-road vehicles. 10. ATE Power Disc Features: ATE’s innovative design improves cooling and performance with a unique pattern. Highly resistant to warping and cracking. Best For: Performance and high-mileage vehicles. When selecting brake discs, make sure to check compatibility with your specific vehicle model and consider your driving needs and conditions.

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