I have been a customer of Shanghai massive chemica...
I have been a customer of Shanghai massive chemical technology co., ltd. for several years now and I must say that I am very impressed with their services. The quality of their products is top-notch and their prices are very competitive. I have never had any issues with my orders and they always arrive on time. The staff is also very friendly and helpful. I would highly recommend this company to anyone in need of chemical products.