The company attaches great importance to product quality, and has strict guarantee measures from raw material procurement to parts processing, assembly, testing, packaging and delivery. The company has passed the ISO9001: 2008 quality system certification. In the process of production, in order to control the product quality, the company has formulated such standards as Quality Manual, Quality System Procedure Assembly, and Three Level Document, and has established an independent full-time inspection team to test the products according to self inspection, mutual inspection, and special inspection, so that the product quality of our company is at the leading level in China.

Our company mainly implements the following standards in the production process:
（1）GB/T12777-99 General Specification for Metal Bellows Expansion Joints
（2）EJMA Standard of American Expansion Joint Manufacturers Association
（3）ISO9001:2008 Quality System
（4）Quality Manual
（5）Compilation of Quality System Procedures
（8）Three level Document

Our company can provide all technical documents and test reports of products according to the requirements of the demander. Under normal use, the special products shall be negotiated by both parties 12 months from the date of production. Under normal operating conditions, if unexpected quality problems occur during the warranty period, the supplier shall be responsible for free replacement within 15 days. The company will actively help repairable products beyond the warranty period.

Our company provides technical consultation such as pipeline selection to ensure the rationality and integrity of pipeline design and ensure that the products work under good working conditions.

Our company can provide technical requirements for product installation and maintenance.

Our company can provide technical instructions for pipeline installation to ensure that the product installation meets the engineering requirements.

The products produced by our company provide spare parts service for life.