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Brief Introduction

SINO STONE’s deep cooperating factory, Tianjin DST Fastener Co., Ltd which is established by Jack Sun in 1986 is still focusing on the shear stud and stud welding machine. Alex Chao became a number of sale’s department and started to do domestic and international business in 2006. DST mainly exported shear studs through 3rd trader company before 2016.

After ten year’s cooperation, Jack Sun(15% shares) and Alex Chao(85% shares) established SINO STONE especially for exporting business in 2016. This is a milestone for DST and also SION STONE. As the most qualified Chinese partner in shear stud and stud welding machine, we will continue to serve many customers all over the world, as per our professional and aspiring team’s focusing on R&D. We can also export the technology of producing shear stud and assisting by educating our clients and averting potential troubles through our experience we can help in many facets.

We can be reached via email, telephone, and fax. We are bilingual, easily accessible and readily available. Always glad to help you in your endeavors.

Meet Our Team

Our amazing teams have  the plenty experiences in shear studs and stud welding machine research and practice.

Alex Chao
Alex ChaoSales Director&Co-owner
Nearly 10 years in welding industry and online market&sales work. Love communicating with people from different countries and areas.
Jack Sun
Jack SunCo-founder&Honorary Chairman
Over 30 years’ experiences in shear stud field, who can solve almost all problems about producing shear studs.
Mr. Huang
Mr. HuangChief Expert
Mr. Huang is our chief expert, and chief editor of China’s first issued stud welder Standard, owning five patent in stud welder field.


1. Technical Service

Sino Stone’s experts and engineers are ready for your remedy of troubles all the time. They would be your side whenever you need to check and analysis your problems. And then they will give you our suggestions and solutions. We can optimize your existed welding method and recommend you the right matches, update information or probably potential troubles. You can get to our service via email, telephone or fax. Now, English and Chinese bilingual language on-line services are available. We will be glad to help you.

Technical Service-Sino Stone
Training-Sino Stone

2. Training

Sino Stone has a experienced training team. According to the differentiated customer’s request, we will arrange comprehensive training program respectively to ensure our customer’s staff can operate our line very well. Every specialist who would be the teacher of our training center has adequate know-how, practices and excellent professional background. Your training program can be achieved at your site or in our training center at Nanjing by our qualified specialists.

3.Spare Parts

We have almost all key parts of our products in stock in urgent case of your spare parts demand. So that we can deliver it within shortest reaction time whenever you need by simple and fast way. Meanwhile Sino Stone would like to recommend you to purchase our original spare parts. This would keep you profitable Spare part quality thanks to using of original parts, tested by our years of practice. Quickly delivery to minimize your loss as much as possible. Attracting price thanks to our professional and bulk manufacturing Uniform compatibility thanks to our standardization system.

Spare Parts-Sino Stone

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