Engineered for heavy-duty composite, thermoset, and high-precision plastic part manufacturing with high clamping rigidity and exceptional repeatability.
Bulk Molding Compound (BMC) – also recognized as Dough Molding Compound (DMC) – represents a thermosetting composite formulation comprising short glass fibers (typically 6mm to 12mm), unsaturated polyester or vinylester resins, mineral fillers (such as calcium carbonate and alumina trihydrate), catalysts, and internal release agents. Unlike conventional thermoplastics that undergo reversible physical melting and solidification, BMC undergoes an irreversible cross-linking chemical reaction under high mold temperatures (typically 145°C to 175°C). Consequently, BMC injection molding machines are specifically engineered to accommodate the rheological, thermal, and mechanical peculiarities of thermosetting materials, providing unmatched structural strength, superior electrical insulation, flame retardance (UL94 V-0 ratings), and high dimensional stability under extreme operating environments.
BMC parts molded on precision machines provide exceptional electrical tracking resistance, making them irreplaceable for high-voltage switchgear, circuit breaker housings, and EV electrical enclosures.
With continuous heat deflection temperatures exceeding 200°C, thermoset BMC components maintain rigid structural integrity without creep or softening under severe thermal loads.
Low-profile additive formulations combined with high-tonnage servo clamping allow zero or minimal shrinkage, enabling sub-millimeter tolerances for complex engineering parts.
Molding BMC components requires a departure from standard thermoplastic injection machine configurations. The machine architecture incorporates several core specialized sub-systems:
In modern industrial manufacturing, automotive lightweighting, renewable energy infrastructures, and electric mobility are driving massive migration toward BMC composite components. Where aluminum die-casting was once standard, fiber-reinforced BMC offers equivalent stiffness, 30-45% weight reduction, superior corrosion immunity, and consolidated single-piece part design without secondary machining. As global energy standards tighten, high-efficiency servo-hydraulic and all-electric BMC injection molding machines deliver up to 50%-70% electricity savings compared to legacy accumulator machines.
The versatility of BMC injection molding spans across mission-critical industries where reliability under severe operating conditions is non-negotiable:
Ningbo Successor Machinery is located in Ningbo, a renowned port city in China. We are a company dedicated to helping clients worldwide find cost-effective yet high-performance machines. As a manufacturing service enterprise in China, we have established ourselves in the field of plastic injection molding. Our unwavering commitment is to provide top-quality plastic machinery to customers at reasonable prices.
Our core expertise lies in crafting high-precision injection molding machines with a clamping force range from 50Ton to 3300Ton. These machines have gained a prestigious reputation globally due to our advanced technology and excellent quality. They are widely used in various industries around the world, including the Automotive Industry, Electric & Electronic Industry, White Goods/Insulation Industry, Packaging Industry, Household Goods, Stationery/Toy Industry, Medical Industry, and Construction Industry.
Guardians of the craftsman spirit, adhering to continuous improvement, meticulousness, professionalism, and hard work.
Since our establishment, we have always placed great importance on building a strong company reputation. We have implemented scientific management methods, combined with rational designs, and relied on high-standard pre-sales, in-sales, and after-sales services to win the trust and approval of a large number of users.
We consider ourselves as the guardians of the craftsman spirit, adhering to the principles of "continuous improvement, meticulousness, professionalism, and hard work." We are constantly striving to offer the best service to our customers and provide competitive products in the industry, aiming to help our customers achieve broader global trade opportunities.
Contact Us TodayOur firm business objectives are to supply high-quality products, excellent service, competitive prices, and prompt delivery. Currently, we are excited about the prospect of seeking more extensive cooperation with overseas customers based on mutual benefits.
Please feel free to contact us for more information. We eagerly look forward to establishing successful business relationships with new clients from all over the world in the near future.
"Choosing Ningbo Successor Machinery is the path to success!"
Strict adherence to international manufacturing standards, CE compliance, ISO9001 certifications, and quality control systems.


















































From compact precision units to ultra-large two-platen machines, delivering tailor-made manufacturing capability for BMC, composites, and high-performance thermoplastics.