We are JIS/GB - standard Slewing Ring Specialist!

OEM, ODM, OBM & tailor-made on request.

Kyoei Seiki is a slewing ring manufacturer in the PRC with Japanese Industrial Standards (JIS) and GB (Guobiao, National Standard), JB (Industry Standard), and JB/T (industry standard recommended), for heavy machineries such as excavator, crane, robot arms and industrial equipments. With over 10 years expertise in the industry, the most advanced technologies,economically efficient production techniques and stringent quality control specifications from Japan, we have built a professional and specialist production line since 2007.
Top Slewing Ring manufacturer
Our Group ranked fifth1 among the slewing ring manufacturers in the PRC in terms of sales revenue to overseas markets. Further, we are the largest slewing ring manufacturer in South China.

Kyoei Seiki, a subsidiary of Best Linking Group. (8617.HK)


Currently, Kyoei Seiki is appointed as an OEM supplier for three Japanese Heavy Machine manufacturers. Our OEM customers include leading Japanese manufacturers or their affiliates, such as, Sumitomo (S.H.I) Constructions Machinery Co., Ltd., Yutani Industrial Co., Ltd. and Ishikawajima SCE (Xiamen) Construction Machinery Co., Ltd.

Moreover, we have established a wide distribution and aftermarket in Japan, Asia, Europe and North and South America.

In addition, we manufacture only one OEM standard and offer the most comprehensive range of products with a shorter delivery time. This is our commitment to all treasured customers.

*The above information is referring to the prospectus in our group holding company, for more details please refer to www.blg.hk for details.


Sumitomo (S.H.I) Constructions Machinery Co., Ltd.

A subsidiary of a company listed on Tokyo Stock Exchange, which is engaged in the manufacture of various machineries, and its subsidiary. Sumitomo is a leading heavy machine manufacturer in Japan.


Yutani Industrial Co., Ltd.

Which is a leading construction machinery parts supplier in Japan.


shikawajima SCE (Xiamen) Construction Machinery Co., Ltd.

Whose shareholder is a leading heavy industry company in Japan.


We are people orientation, we care for the interest of our customers, employees, business partners and all business stakeholders. Good faith and mutual trust are beliefs in our business ethics.

Continuous improvement with persistent enhancement in adoption of modern technology and sustain sustainable towards green factory is out long-term target.


Customer First: Strive for customer satisfaction and long-term reliable relationship, with our strongly committed management, merchandising and quality assurance team.

Product: Products and professional services foremost, continue to provide premier products and services with stringent quality assurance, modern technology and advanced equipment.

Sustainable: With our efficient and effective management, we will integrate and balance all the interests of all parties, including the corporate, industry and Society.




Supported by a capable management team with in-depth industry knowledge.

Over 30 years of experience in slewing rings manufacturing industry.


JP OEM Supplier

OEM supplier for three Japanese Heavy Machinery manufacturers,

including Sumitomo, Yutani, and IHI.



Our products can be widely applied to over 200 types of models of excavators and cranes, wind turbines, military industry, robotics, etc.



We are always striving for strengthen our staff morale and improve our ability to retain personnel.