-
Technical services (casting plant planning and design, process selection, equipment selection, casting technical services).
-
Casting machinery (green sand automatic molding line, resin sand production line, resin coated sand production line, etc.);
-
Casting materials (casting resin, curing agent, casting paint and other casting ingredients, etc.);
-
Cast iron (production of valve castings, auto parts and construction machinery parts and other products);
Provide high-quality "One-stop" services to foundries
RHCR Technology (Qingdao) Co., Ltd. is a scientific and technological production enterprise integrating production and sales of casting, casting machinery and casting materials. It is an export-oriented enterprise with self-operated import and export rights.
Products sell well in Germany, Spain, South Korea, Vietnam, Zimbabwe, Indonesia and other countries. More than 200 foundry companies.
The company's main business:
Product
Products sell well in Germany, Spain, South Korea, Vietnam, Zimbabwe, Indonesia and other countries. More than 200 foundry companies.
Why Choose Us
30 years+ casting technology team
Serving more than 200 foundries, providing "nanny-style" services
01
Overall design of foundry factory
Factory planning, workshop layout, process selection, production line design
02
Manufacturing and installation of casting equipment
Manufacturing and installation of various process production lines for clay sand, resin sand, and coated sand
03
Solutions for product quality
Casting mold process design, solutions to product quality problems during the production process
04
Customer photos
News & Events
2026/01/30
Furan resin is a thermosetting resin synthesized from furfural and furfuryl alcohol as core raw materials (mostly derived from biomass such as corn cobs and cottonseed hulls). It is named for the furan ring in its molecule. It possesses core advantages such as superior corrosion resistance, high temperature resistance, low permeability, and the availability of renewable raw materials. It is a high-performance material used in casting, chemical corrosion protection, and composite materials, and is particularly suitable for high-end casting and harsh corrosive environments.
2026/01/28
Shot blasting machines accelerate steel shot, steel grit, glass beads, and other projectiles to a speed of 60-100 meters per second, applying them to the workpiece surface with concentrated impact. This achieves multiple processing effects such as surface cleaning, strengthening, rust removal, shaping, and roughness adjustment, completely replacing outdated processes such as traditional manual grinding and pickling. It has become an indispensable production equipment in manufacturing, construction, aerospace, transportation, and other fields.
2026/01/20
A Vietnamese customer ordered a complete production line for producing high-quality cast iron. The green sand/wet sand casting production line equipment has been shipped.
2026/01/16
A Russian customer ordered a resin sand production line, furan resin, curing agent, and other casting materials from our company. The production line has been installed.
2025/12/11
The core advantage of coated sand casting production lines lies in the balance between precision, high efficiency, and environmental friendliness, making them particularly suitable for the mass production of precision castings with high requirements for dimensional stability and surface quality. Their automation aligns with the Industry 4.0 trend, helping foundry companies achieve cost reduction, efficiency improvement, and green transformation. However, it should be noted that the initial equipment investment is high, and strict control of process parameters is required, necessitating professional technical support and maintenance.
2025/11/28
High-efficiency clay sand production line to help upgrade the foundry industry.
2025/11/20
High-Efficiency Sand Processing Production Line Solutions
2025/09/28
Our company's clay sand production line has been shipped grandly, and the first batch of seven containers has sailed around the world!
2025/08/07
In the field of precision casting, coated sand production lines have become a core technology due to their significant advantages. Ruihai Changrun not only has advanced coated sand production lines, but also provides professional design, installation and service.
2025/07/25
Ruihai Changrun not only has a mature and efficient resin sand production line, but also can provide professional whole-line design, installation and commissioning services! We help enterprises easily achieve high-quality, low-cost, and environmentally friendly casting production, opening a new chapter in intelligent manufacturing.
2025/04/30
RHCR Technology Co., Ltd. is looking forward to seeing you at the Tianjin Foundry Exhibition
2025/04/24
It will be held grandly at the National Exhibition and Convention Center (Tianjin) from May 20th to 23rd, 2025!
2025/04/07
Resin sand casting production line: efficient, precise and environmentally friendly casting solution
Choose resin sand casting, choose efficiency and quality
2025/03/27
Uncover the core advantages of coated sand casting technology and help improve the quality and efficiency of the manufacturing industry
2025/03/18
Ruihai Changrun: Leader in coated sand casting technology, creating high-quality castings
2025/03/11
Ruihai Changrun: Building an efficient clay sand casting production line and leading the industry's technological innovation
2025/03/03
The Algerian Foundry Association commented: "China's smart manufacturing provides an efficient solution for local industrial upgrading."
2024/12/30
Looking forward to meeting you at the exhibition~!
2024/12/24
MELT STEEL & MINIG ALGERIA EXPO 2025
2024/12/18
The automatic clay sand molding production line is also divided into a green sand casting production line. It is mainly used for the molding process of clay sand for casting, realizing automatic production and improving production efficiency and product quality.