China sulphur black manufacturer
Zhengding county bairun chemical products manufacturing co. ltd +8615175136789 wechat/whatsapp 383353651@qq.com
sulphur black price raising
sulphur black price raising , in 2019 sulphur black price falled much in past time. But recently the price may raise , one raw material of sulphur black supply not stable and raised 200USD in a week and still raising . and hot sell season coming , sulphur black may raising much in coming days.
Sulphur black price
Sulphur black prices are rising. Prices are the main factors: 1, coal change to natural gas, sulphur black production will use a lot of steam, and the use of natural gas fired boiler, the cost will rise sharply. 2, raw material prices, the same is due to environmental reasons, mainly tight supply of raw materials […]
Sulphur Black Dyeing Precautions
First, the sulphur black dye is not in the water dyes, so the sulfur dye itself does not have the dyeing capacity of cotton. But it is in the sulfuric acid alkali solution in the dyes reduced to the leucorrhea on the cotton has a good dyeing performance. The sulphur dye is to be carried […]
