RZD’s rubber products have been widely utilized by renowned international brands such as Ford, Mercedes-Benz, BYD, Haier, Midea, and others. These products have gained significant recognition and approval from a large customer base. One notable case study involves the development of rubber diaphragms for water pumps, successfully applied to small-sized pumps in March 2019.

In June 2018, the customer was searching for a reliable partner for their rubber diaphragm pump project. Through online research, they discovered RZD, known for our extensive experience in silicone & rubber products. The customer sent us the relevant drawings of their product for evaluation. Upon reviewing the 3D design, we noticed its similarity to a rubber diaphragm product we had previously developed.

On July 10, 2018, the customer visited RZD on-site. We showcased samples, products, as well as our production and testing equipment related to rubber diaphragms. Impressed by our capabilities, the customer decided to choose RZD as their partner.

• The project presented higher demands in terms of dimensional accuracy and material compliance with the US FDA regulations.
• The product required a thickness tolerance of ±0.04 mm, which meant the mold dimensions needed to achieve at least ±0.02 mm tolerance to ensure the product dimensions.

To meet these requirements, we strictly controlled the precision of the molds, focusing on every detail. Through meticulous efforts, the initial sample testing successfully met the customer's high-precision expectations.

• The material passed FDA certification by a third-party laboratory.
• Next, we proceeded with assembling and testing the finished products. The parts needed to undergo 720 hours of continuous operation without any quality issues, while also meeting the specified water pump pressure requirements.
• During this stage, we encountered challenges such as frost and coating issues, product breakage, and failure to meet the required water pump pressure. Through countless adjustments, we managed to resolve all these problems.
• Subsequently, we conducted product durability testing, procuring specific testing equipment and conducting repeated experiments. After six months of testing, all performance aspects of the product successfully met the customer's requirements.

Following confirmation of the samples, we proceeded to develop production molds and smoothly commenced mass production in March 2019.

Building on this success, we expanded our collaboration to develop other products, including rubber umbrella valves, which received high praise from the customer. In conclusion, the rubber diaphragm pump project achieved a resounding success, thanks to our dedication and accumulated technical expertise. We welcome prospective clients to visit our company for further discussions and negotiations.