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About Us

Company Overview

Established in 1980, Sino Industry and Trade Co., Ltd. (hereinafter referred to “SITC”) is a leading manufacturer of casting parts in China. Being one of major suppliers of auto/Machinery parts for automobile manufacturers spreaded all over the world, the company is commited to offer high quality products with competitive prices and excellent service worldwide, and focus on creating high value for customers.

Headquartered in Rizhao City, Shandong Province, P.R. China, the company wholly owns a subsidiary Production Factory named “Rizhao Longshan Pricision Machinery Manufacture Co., Ltd.”, which has superior production equipment, perfect and effective quality assurance system, perfect detection means, rich technical force. Its goal is "building an extraordinary brand, quality first, customer first, and reputation first". 


SITC is a member of China Foundry Association, and the member unit of China International Chamber of Commerce. More than 40 years experience in casting industry field, with 60 experienced technical engineers and 800 skilled workers, the company’s goal is to leverage its first-mover advantage in this field to support global low-carbon economic development. We are agile and quick to react to market dynamics, meet the evolving needs of, and provide optimal solution to, our customers.

We have passed the “ IATF16949” International Quality Management System Certification , as well as the “BV”, “CE”, “ISO” (Quality management & Environment management) Certification, OEM & ODM service is available.


40+ years experience


Experienced technical engineers


Skilled Workers

Competition Advantages

1. A senior engineering technical team with special skills and rich experience for over 40 years in product design, casting, and machining fields. 

2. Based on customer needs, in the beginning of product development, offer a solution, products design, by structural component designed to casting parts, optimize product design, then reduce costs and creating more value for customers.  

3. Have special technology and skill to solve and handle special material, special structure, special defect and special processing. 

4. Use casting simulation analysis system software, try our best to ensure the success of one-time trial sample.

5. Advanced testing equipments in the industry, and strict quality control system, to ensure us constantly, stably to provide high-quality products for our customers. 

6. Carrying out ISO9001 and IATF16949 quality management system, guarantee of the quality. 

7. China FAW/FOTON/SINOTRUK/SANY designated supplier on customization of auto parts.

8. Customer's demand is our pursuit. We stick to the quality management philosophy that "Starting from the customer needs and ending with their satisfaction, focusing on customer demands and exceeding their expectations". 

9. Inquiry, quality complaints and E-mail response can be quickly and efficiently feedback within 24 hours. 

10. As a professional manufacturer specializing in the design, development, manufacture and marketing of auto casting parts, machinery casting components, mechanical products, we have been supplying high quality casting products worldwide for more than 40 years.