page about us

About Us


Who We Are?

Longou International Business (Shanghai) Co., Ltd. was established in the year of 2007 and located in the economic center--Shanghai. It is a construction chemicals additives manufacturer & application solutions provider and committed to providing construction materials & solutions for global customers.

After more than 10 years of continuous development and innovation, LONGOU INTERNATIONAL has been expanding its business scale to Southeast Asia, Middle East, Europe, America, Australia, Africa and other major regions. In order to meet the growing personalized needs of foreign customers and better customer service, the company has set up overseas service agencies, and has carried out extensive cooperation with agents and distributors, gradually forming a global service network.

What We Do?

LONGOU INTERNATIONAL is specialized in the R&D, production and marketing of Cellulose ether (HPMCHEMC, HEC) and Redispersible polymer powder and other additives in construction industry. Products cover different grades and have various models for each product.

Applications include drymix mortars, concrete, decoration coatings, daily chemicals, oil field, inks, ceramics and other industries.

LONGOU provide global customers with high quality products, perfect service and the best solutions with the business model of product + technology + service.

What we do

Why Choose Us?

We provide the following service to our customers.
Study the properties of competitor's product.
Help client to find matching grade quickly and precisely.
Formulation Service to improve performance and control cost, according to each client's specific weather condition, special sand and cement properties, and unique working habit.
We have both Chemical Lab and Application Lab to ensure each order.s best satisfaction:
Chemical labs is to allow us to evaluate properties as viscosity, humidity, ash level, pH, content of methyl and hydroxypropyl groups, substitution degree etc.
Application lab is to allow us to measure open time, water retention, adhesion strength, slip and sag resistance, setting time, workability etc.
Multi-lingual customer services:
We offer our services in English, Spanish, Chinese, Russian and French.
We have samples and counter samples of each lot to verify the performance of our products.
We take care of the logistic process until the destination port if the customer requires it.

Our Team

LONGOU INTERNATIONAL currently has more than 100 workers and more than 20% are with Masters or Doctor’s degrees. Under the leadership of Chairman Mr. Hongbin Wang, we have become a mature team in the construction additives industry. We are a group of young and energetic members and full of enthusiasm for work and life.

Corporate Culture
Our development is supported by a corporate culture over the past years. We fully understand that her corporate culture can only be formed through Impact, Infiltration and Integration. 

Our Mission
Make buildings safer, more energy efficient, and more beautiful;
Business philosophy: one-stop service, personalized customization, and strive to create the greatest value for each of our customers;
Core values: customer first, teamwork, honesty and trustworthiness, excellence;

Team Spirit
Dream, passion, responsibility, dedication, unity and challenge to the impossible;

To achieve the happiness and dreams of all employees of LONGOU INTERNATIONAL.

Our team

Some of Our Clients

Some of our clients

Company Exhibition

Company exhibition

Our Service

1. Be 100% responsible for quality complaint, 0 quality issue in our past dealings.

2. Hundreds of products in different levels for your option.

3. Free samples (within 1 kg) is offered at any time except carrier fee.

4. Any inquiries will be replied within 12 hours.

5. Strictly on selecting raw materials.

6. Reasonable & competitive price, punctually delivery.

Our service