Lost wax casting, also known as investment casting, has transitioned from a traditional artisanal process to a high-precision, AI-integrated manufacturing pillar. As a leading China custom lost wax casting manufacturer, we have witnessed the shift towards micro-tolerance engineering and metallurgical consistency. In the current global industrial landscape, the demand for components that offer both structural complexity and material longevity has never been higher. Our facility in Shandong leverages digital twin simulation to predict thermal stress during solidification, ensuring that every cast—from stainless steel to carbon alloy—meets the rigorous "Zero-Defect" standard required by Fortune 500 OEMs.
Moving beyond +/- 0.5mm, our current automated processes achieve tolerances that rival CNC machining, reducing secondary operation costs for our clients.
Specializing in WCB, WCC, and 300/400 series stainless steel, we optimize the chemical composition to enhance corrosion resistance and tensile strength.
From CAD design to wax injection and vacuum melting, every step is logged into our ERP system for 100% quality traceability.
JUNLONG Machinery Co., Ltd. was founded in 2014. Located in Weifang, Shandong, the company covers a total area of 60,000 square meters and has an annual production capacity of 20,000 tons of precision castings and machined finished parts. It specializes in materials such as carbon steel, alloy steel, and stainless steel. With over 200 employees, including more than 30 engineering technicians, the company is a high-quality casting supplier integrating precision casting and deep processing.
Global procurement teams today face unprecedented challenges, from geopolitical shifts to the urgent need for ESG (Environmental, Social, and Governance) compliance. As a premier China custom lost wax casting manufacturer, Junlong Machinery has transitioned to Factory 4.0 principles. This means more than just automation; it represents a resilient supply chain ecosystem where lead times are compressed through vertical integration.
We combine Mold Manufacturing, Precision Casting, and High-End Machining (horizontal/vertical CNC centers) under one roof. This single-point-of-responsibility model eliminates the quality fragmentation often found when outsourcing to multiple vendors. For our clients in Germany, the USA, and Italy, this translates to a 30% reduction in "Total Cost of Ownership" (TCO).
Equipped with internationally advanced automated casting production facilities and comprehensive physical and chemical analysis equipment, the company significantly enhances manufacturing efficiency and product quality stability.
Leveraging strong engineering capabilities, a complete quality control system, and advanced management systems, the company has become a well-known brand exported to Germany, the United States, Italy, Canada, and beyond.
The company serves as a key supplier for automotive, rail transportation, engineering machinery, material handling machinery, agricultural machinery, and petroleum machinery.
Our commitment to quality is validated by international standards. We ensure process control over every production detail to achieve high customer satisfaction.



Forging Strong Mechanical Backbones: Excavators, loaders, and cranes rely on our high-strength, wear-resistant castings to support heavy-duty operations in extreme mining and construction environments.
Custom lost wax casting for farming equipment, harvesters, and farm vehicles. We provide durable components that withstand soil abrasion and high-torque mechanical stress.
Precision castings for ship parts requiring superior corrosion resistance to seawater. Our stainless steel solutions ensure long-term structural integrity for marine vessels.
Supporting global infrastructure with high-precision railway parts that meet stringent safety and fatigue resistance standards for high-speed and freight rail.
Our company will continue to strengthen research and development efforts for new products and technologies, integrate advanced management and technical resources, build a powerful brand, and strive to become a world-class precision casting supplier!
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