Shanghai Yonglong Chem-Tech Co., Ltd

The black series of acid dyes is widely used, we manufactured large qty of acid dyes with best quality and sui

As the largest manf. of PNA in China, we provide goods with best quality and suitable price, and all our clien

the acid dyes is very hot in domestic market for the technology of our engineers. you can rest assured about i

As the black series, we have good quantity, with low price, for these days are commonly used, if you have any

acid dyes are used in fibre and leather etc. we produce various acid dyes, more require pls contact me without

the blue series have been widely accepted by our clients, if you have any interest on the product or you need