April 17, 2023-18th，The Trailer Sub-Technical Committee of the National Automobile Standardization Technical Committee was held in Wuhan.《Road vehicles-Drawbar couplers and drawbar shackles-Part 1：Strength test for general cargo mid-axle trailer》、《Road vehicles-Drawbar couplers and drawbar shackles-Part 2：Special vehicle strength test》、《Road vehicles--Combination vehicles--Strength requirements for multi-vehicle coupling device》、《Road vehicles 3.5tThe following requirements for trailer support wheels and lifting gear》And other four national standards review meetings.。Shandong Changlong Automobile Manufacturing Company（Hereinafter referred to as Changlong Trailer）Sun Fusen, Chairman of the Board of Directors, and the representatives of the members of the Trailer Bidding Committee、More than 50 technicians and some observers from the standard drafting unit participated in the meeting.。

Revision of standards to improve product quality and safety

The four national standards are in accordance with the project establishment plan issued by the National Standardization Management Committee.，Institute of Highway Science, Ministry of Transport、Shandong Rongye RV Manufacturing Service Co., Ltd. and other units presided over the formulation.，Technically modified and adoptedISOInternational standards，Strictly follow the national standard review procedures，After full investigation、Technical demonstration and related test verification are completed after extensive consultation.。

Relevant standards to improve product quality，Standardize the production and use of products，It is of great significance to promote the high-quality development of the economy and society.；On the Trailer Train with Mid-Axle for General Cargo、Standard for strength of coupling devices between combination vehicles and multi-trailer vehicles for specific application scenarios，Formulated according to the requirements of vehicle production and use in China，Strength requirements and test methods for standardized and unified drawbar couplers and drawbar shackles，Improve product quality，It is of great significance to ensure the safety of cargo transportation.。

National Standard Review Changlong Contributes Industry Wisdom

Experts at the meeting listened carefully to the background of the revision of the standard.、Research process、Report on the handling of replies to solicit opinions, etc.，The text of the standard submitted for examination was examined one by one.、Preparation instructions and other relevant materials submitted for review，Suggestions and suggestions for supplement and improvement are put forward.，Among them, a number of amendments proposed by Changlong trailer were adopted.，Contributed the wisdom of Changlong to this national standard review meeting.。

Changlong Trailer is a company focusing on the research and development of road transport vehicles.、Production、Sales and service，By“Leader in China's Special Purpose Vehicle Industry”Founded by Sun Fusen，The company's products cover low flat panel、Container、Barn、Self-unloading、Box type and other series semi-trailer，And take the lead in introducing trailers in the industry in 2022.“Customization Center”。Joint universities and scientific research institutes、Industry technology master、Senior maintenance technician、Senior card friend，Sun Fusen, chairman of Changlong Trailer, an industry expert, personally led the work.“Fusen customization”，Personalize according to card friends、Multi-level demand，Tailored based on regional characteristics and functional requirements，Really achieve one domain and one version，One vehicle, one map，One place, one generation。The company has obtained more than 30 patents.，It greatly promotes the development and progress of domestic semi-trailer technology.。

Chairman Sun Fusen has always been committed to promoting the technological progress of domestic semi-trailers.，It is committed to transforming the advanced technology and innovative achievements of enterprises into the content of national standards.，Actively participated in the drafting and formulation of a number of national standards。Focus on high-performance semi-trailer for 35 years，Changlong Trailer always insists on winning by quality.，Think what the user thinks，Actively solve the safety and quality problems commonly encountered by the semi-trailer industry and drivers.，Proven by years of market testing，Changlong trailer has won the affirmation of the industry and the trust of car friends.，Company“User-centric，Demand-oriented”The concept of development is constantly pushing Changlong trailer to go further.。