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Chongqing Henghui Precision Mold Co., Ltd. is equipped with state-of-the-art machinery, including CNC lathes, CNC machining centers, CNC Cylindrical Grinding Machines, CNC EDM machines, CNC Cutting Machines, Milling Andam Drilling Machines, and more. Additionally, we have a wide range of testing equipment such as Rockwell Hardness Testers, Projectors, and 3D Image Measuring Instruments. At Henghui, we prioritize the use of high-quality tungsten carbide material and employ professional vacuum heat treatment techniques. Our expertise lies in the design, manufacturing, and supply of precision molds for clients in the cold heading and hot upsetting industries. Our molds are manufactured to adhere to the highest standards, with a relative standard deviation controlled within 0.005mm and concentricity within 0.01mm. We strictly follow the ISO9001:2015 quality management system requirements in all our operations, ensuring that we consistently deliver timely and high-quality services to our customers. As a result, our products have been exported to Southeast Asia, Europe, and the United States. Our core principles revolve around putting the customer first, prioritizing quality, embracing technology, and providing dedicated service. We warmly welcome you to engage in business negotiations with us, where we can demonstrate our commitment to excellence.

Guangdong Yinchuang Technology Co.,Ltd. was established in 2009, located in Dongguan City, China. We are an ISO 9001: 2015 certified company and have specialized in manufacturing tungsten carbide mold components( punches, bushings, dies, pins), tungsten carbide mechanical parts, glue dispensing nozzles, needle pins, etc. We are very good at grinding milling polishing EDM machining of tungsten carbide, high precision and accurate. We have Micro EDM machine, Sodick EDM machine, CNC external cylindrical grinding machine, GF high speed milling machine and CNC lathe machine.

Youmude Precision Technology (Dongguan) Co., Ltd. was established in 1999 and is headquartered in Dongguan, Guangdong Province, China. Engaged in the research and development, production and sales of mold standard parts, and provide one-stop supply service of mold accessories.

Main products: die punches, guide posts and bushes, mold gas springs, self-lubricating sliders, die hooks, etc. are widely used in various fields such as hardware dies, automobile dies, plastic dies, and FA automation products have passed ISO9001 quality management certification.
We mainly sell to Europe, America, Southeast Asia and other countries.
We have our own factory and have provided good products to customers in Europe and America for a long time, which has been unanimously recognized by them. Therefore, while we can guarantee the quality, we can also save you purchasing and production costs.
We are a professional team. Our members have many years of experience in cross-border logistics and have served thousands of customers. We firmly believe in customer first, service first, honesty and pragmatism, and win-win cooperation.

We develop and manufacture complex steel components for the international industry. These are cast using the investment casting method ('lost wax' or 'precision casting'). We are glad to share ideas with you about complex 3D designs that must be cast in series. Our casting process is high-tech, environmentally friendly and reliable.

Sigma Metallurgy, was founded in 2021 by two engineers with more than 20 years of experience, and today it continues its activities as the solution partner of global companies from different sectors in investment casting with its staff of 30 people. From the beginning up to date, with expert staff, innovative approaches, and investments, Sigma has become able to offer its customers the finished product service with a quality perspective at international standards.
Sigma Metallurgy can offer services such as mold design and manufacturing, machining, coating, and assembly with customer requirements, as well as implement and report destructive and non-destructive inspections within its own structure and through accredited organizations.

1, Who We Are
-Experienced manufacturer, exporter and service provider.
-With extensive network of qualified manufacturing branches.
-With diverse capabilities.
2, What We Do
-OEM and ODM services.
-Custom tooling and plastic parts manufacturing.
-Quality assurance from prototype to mass production.
-Lead time control.
-Customs documents.
3, Capabilities
-Plastic injection&blowing molding and secondary operations
-plastic mold making
-Machining, CNC machining
-Rapid prototype