Cooperation Case of Vietnam River Sand Drying Production Line
A Record of Transnational Cooperation between Tongding Company and Vietnamese Partners: Mr. Trương and Miss Trần
In April 2025, partners Mr. Trương and Miss Trần made a special trip from Vietnam to visit Tongding Company.
Business Manager Amber greeted them with a smile and a handshake, then looked up at the sky and said, “Look at this weather today. It’s April, and the sun is neither scorching nor intense. Starting our cooperation at this time is also very timely. It’s neither too early nor too late, but just right.”
The next day, the business manager and the technical engineer picked up the clients from the hotel at the agreed time and accompanied them to the client’s site in Datong, Shanxi Province for a visit. They gave a detailed introduction to the sand drying production line.
The triple-cylinder rotary dryer independently developed by Tongding Company features a patented large kiln head design that prevents material backflow, opens up the combustion channel, and ensures that the heat is fully utilized by the material.

The wheel belt of the dryer is made by a forging process, with a dense structure and good mechanical properties. It eliminates defects such as sand holes, gas pores, and shrinkage cavities in castings.
The supporting wheels are made by the quenching process of solid 45# steel. They have low wear and are durable.
With this unique design, low energy consumption and stable performance are achieved, which is very attractive to domestic and foreign river sand processing enterprises.
After a detailed on-site inspection by the Vietnamese partners Mr. Trương and Miss Trần, they expressed strong approval of the equipment design, materials used, and production process.
During the negotiation, Mr. Trương and Miss Trần from the Vietnamese partner company clearly stated that they were planning to carry out a river sand drying project in Vietnam. The local area has very strict environmental protection requirements.
To address the customer’s concern, our technical team immediately proposed a customized dust removal system on the spot. It consists of a cyclone dust collector and a pulse dust collector connected in parallel, forming a two-stage dust removal system.
The pulse dust collector uses a compartmentalized offline pulse jet cleaning method, which has better dust collection and cleaning effects. This well meets the customer’s special environmental protection requirements, and the customer verified this at the site in Datong, Shanxi Province.
From the initial acquaintance, investigation, proposal customization to final contract signing, it took nearly one year.
With the support of renowned clients, technical strength, and sincere service, Tongding Company has won the high trust and recognition from the Vietnamese partners Mr. Trương and Miss Trần.

The equipment has arrived, and our team has also arrived. Installation, commissioning, and training – all have been carried out without missing a single step.
The customer said, “You are more attentive than I am.” We replied, “You can rest assured when using it, and we will feel at ease as well.”
After-sales service is not just a slogan; it is the continuous commitment on the spot every day.

Cooperation means commitment. We adhere to quality as the foundation, deliver efficiently, and offer 24-hour online service.
We are willing to contribute to your development and help the market thrive continuously. We wish your company a prosperous business, a flood of orders, and win-win cooperation!






