About Us
● In 2006, we launched core brand SANHA , specializing in hydraulic excavator attachments led by hydraulic breakers.
● In 2009, we opened our Shanghai sales & service headquarters to serve major global excavator manufacturers. We built a nationwide distribution network and exported products to 15 countries across four continents, forming a complete R&D, production and after-sales system.
● In October 2019, we founded Yantai Doocang Heavy Industry Technology Co., Ltd., our group's core manufacturing base. Equipped with full sets of Korean precision machining and testing equipment, we independently produce hydraulic breakers, quick hitches, grapples, hydraulic shears and other excavator attachments.
● In 2020–2023, we invested heavily in hydraulic system development and obtained multiple patents for structural and control technologies.
● In 2024, we obtained National High-Tech Enterprise certification.
● In 2025, we were recognized as a national tech-based SME.
We now hold over 30 patents and implement strict quality control standards, providing one-stop excavator attachment solutions for mining, infrastructure and demolition projects worldwide.
Our Factory
Yantai Doocang Heavy Industry Technology Co., Ltd. is a large-scale high-tech factory specializing in excavator hydraulic attachments, including hydraulic breakers, quick couplers, grapples and hydraulic shears. Equipped with standardized production workshops, professional inspection labs and large warehouses, we have sufficient capacity for bulk global orders and customized OEM/ODM projects.
Our Product
Mainly engaged in the production of hydraulic products such as hydraulic breakers, quick connectors, hydraulic shears, and hydraulic grabs.
Product Application
Our products are widely suitable for heavy-duty engineering scenarios such as mining, earthwork engineering, infrastructure construction, building demolition and river regulation.
Our Certificate
We boast a comprehensive technical certification and intellectual property system. The company has been accredited as a National High-Tech Enterprise and National Technology-Based SME, owning over 30 utility model patents and structural design patents.
We adopt full sets of advanced South Korean production and testing equipment, such as CNC machining centers, automatic heat treatment lines and ZEISS precision detectors, realizing 100% in-house core part production. All hydraulic attachments undergo strict pressure, sealing and durability tests. With reliable precision, stable performance and long service life, our products are widely exported to global markets, winning trust from overseas clients.
Production Market
We have long-term supporting cooperation with well-known construction machinery brands at home and abroad, including Sany, LiuGong, Lovol, Hyundai and Zoomlion. We provide professional hydraulic breakers and full-series hydraulic attachments, along with full-process technical support and equipment maintenance services. Since foundation, our annual sales volume has exceeded 100 million RMB. We have achieved 100% provincial dealer coverage in China, while our overseas distribution network covers 30 countries and regions across four continents. With stable quality and reliable after-sales service, we have built long-term partnerships with global clients and established solid brand influence in the hydraulic attachment industry.
Our service
Rapid Response
Respond promptly to customer inquiries and feedback, and deliver exclusive solutions in the first place.
Professional Training
Provide systematic training for equipment operation, troubleshooting and maintenance.
Local Support
Offer on-site consultation, technical support and problem solving via our global dealer network.
Dealer Empowerment
Deliver regular technical training, focusing on new product technologies and practical operations to improve terminal service capabilities.