The Craft of Casting, the Root of Industry.
"The Craft of Casting. The Foundation of Industry." is more than a slogan — it's the shared philosophy behind ROYAL METAL CASTING and SHIN LI AUTO PARTS. Royal Metal Casting treats casting as a craft refined over generations, tempering every pour with an artisan's discipline; SHIN LI AUTO PARTS builds on that craftsmanship through precision machining and rigorous quality control, turning the art of casting into the solid foundation that keeps the industry running. From molten iron to precision parts, we believe true industrial strength begins with respect for the craft of casting.
Royal Metal Casting Co., Ltd.
Royal Metal Casting Co., Ltd. specializes in cast iron foundry operations, working primarily in gray cast iron FC250～FC300 and FCD 450~800. The company operates an automated molding line paired with an automated iron pouring and handling system, with production data recorded and monitored at every workstation in real time — replacing reliance on experience-based judgment with technology-driven verification, upgrading a traditional industry into a modern foundry where every process is traceable and every result is verifiable. As the casting source for the group, Royal Metal Casting lays the material and quality foundation for the precision machining and assembly that follow.
SHIN LI AUTO PARTS CO., LTD
SHIN LI AUTO PARTS CO., LTD is responsible for machining, assembly, and international export, serving as the critical stage that turns the group's castings into precision parts. The company performs dimensional inspection using Mitutoyo coordinate measuring machines and holds ISO 9001 certification — verifying the accuracy and reliability of every product through data, not guesswork. While our products are primarily supplied to the aftermarket, we manufacture every part to original equipment (OE) standards, using coordinate measuring machines to verify dimensions so that aftermarket parts deliver the same level of precision and reliability as OE parts. Core products include flywheels (NBC brand), brake drums, and wheel hubs suitable for Japanese commercial truck, along with other custom products such as elevator sheaves, valves, and pump components, plus custom development capability.
Foundry Equipment
On the casting side, we run a Sinto horizontal molding machine paired with an iron pouring and handling system — pouring temperature and cooling rate are controlled by the system, not just experience-based judgment. Further down the line, an automatic deburring machine handles flash removal on the castings, reducing the inconsistency you'd get from manual finishing. Production data from every workstation is also logged in real time for traceability. We work mainly in gray cast iron (FC) and ductile iron (FCD).
Machining Equipment
On the machining side, we have a Japanese OKUMA vertical lathe that handles workpieces up to 760mm in outer diameter, along with a milling machine capable of up to 1450mm — so large brake drums, flywheels, or custom castings can be machined in-house without outsourcing. After machining, we verify dimensional accuracy using a CNC coordinate measuring machine, ensuring every finished part meets the tolerances specified in customer drawings. If you have a large workpiece that needs machining, feel free to send over the drawings and we'll take a look.
Certifications
Our achievements are recognized through industry awards and international certifications, reflecting our commitment to quality, innovation, and customer satisfaction as a trusted industrial partner.