Changsha Lianda Chemical Co., Ltd. Quality Control

Good quality Fluorescent Brightening Agent for sales
Good quality Fluorescent Brightening Agent for sales
Customer Reviews
The goods arrived quickly in the manner provided. Very professional seller service.We'll purchase again and cooperate with you for long time.

—— Giacomo

Package prepration was really fast and the delivery was even faster. Always liked dealing with Lianda company for optical brightener and pretty satisfied with the service and product.

—— Sohail Al

Very good quality and satisfied with the product! You are a very good supplier in China!

—— Jayson

Very good quality and fast delivery, I like it very much! Thank you for all you did.

—— Timya

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QC Profile

Quality Control

We have five main steps of QC process to ensure the goods quality before shipment at present,


*Melting Point Testing

By drying oven equipment to test the thermal endurance (Such as :OB≤ 220℃, OB-1≤ 300℃)


*Purity Testing

By liquid chromatography,for OB,OB-1,it should be ≥99%.


*Solubility Testing,

To make sure whether the material  can dissolve it in organic solution or not,


*Appearance Color Detection,

it can be adjustable to the requirement.


*Color Light testing

By GC equipment, to ensure the finished products to be Red,Blue or White in color effect


Besides above tests ,we other testings,such as,Mesh testing for granular size; Ash testing for impurity etc.



  • Changsha Lianda Chemical Co., Ltd.



    Issue Date:2018-04-23

    Expiry Date:2021-04-23

    Scope/Range:Manufacture and sale of Optical Brightener

    Issued By:CNAS

  • Changsha Lianda Chemical Co., Ltd.



    Issue Date:2014-02-14

    Expiry Date:2034-02-13


    Issued By:RJS

Contact Details
Changsha Lianda Chemical Co., Ltd.

Contact Person: Ms. Molly Mo

Tel: +86 18570351751

Fax: 86-731-88726158

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