Although stainless steel sinks can be designed with a variety of sink surfaces, they still can't escape the monotonous appearance, in contrast to granite sinks, which can catch the attention of consumers with only the pattern and texture. German brands are the promoters of granite sinks, among which the two leading brands of Shuoke and Bolangao have the most voice.
 
Founded in 1925, Prolango initially manufactured tinned copper sinks and began to produce stainless steel sinks in the 50s, with the ability to manufacture "three-slot" (two-slot storage tables). In 1981, Prolango introduced its first coloured sink, which was made of composite materials and became a leader in the European market. Today, Prolango has become one of the world's leading sink manufacturers with an annual turnover of nearly 380 million euros.
 
The manufacturing process of Bolangao stainless steel sink is relatively mature, using the same 18/10 chromium-nickel alloy steel as the raw material, which has excellent corrosion and impact resistance. But when it comes to Bolangao's most competitive product, it's actually a granite sink. As early as 30 years ago, Bolangao was the leader of the granite sink world. In 2018, Prolango participated in the China International Import Expo as the only kitchen sink brand, exhibiting more than 30 stainless steel and granite sinks, many of which won the Red Dot Best Design Award.
 
Granite sinks are popular in the European and American markets due to their stable physical properties and elegant appearance. Granite material has a dense structure, is not easy to penetrate oil and color, is resistant to acid and alkali corrosion, and is very durable, so laboratories and medical institutions often choose granite tanks instead of stainless steel tanks. Secondly, the Mohs hardness of stainless steel is only 5-5.5, while granite can reach 7, which is more wear-resistant, and ordinary knives cannot leave scratches at all. However, Bolangao has strict quality control in the manufacturing process, the material particle size is smaller, and the distribution of tank particles is uniform and pure, so its sink color is pure, and there are many colors to choose from, which is widely favored by consumers.
 
The two series of 700-you and METRA 9 are the main granite sink series of Bolanggao, which belong to single and double tanks, with prices between 3000-4000 yuan, and 10 color options, of which asphalt gray and jasmine white are the most popular. In terms of structure, Bolangao polishes the size of the fillet to R10, uses a square overflow on the tank wall, the sewer pipe at the bottom of the tank is placed at the back, and the faucet is made of granite as the main body, the whole set is not only artistic, but also practical. It should be reminded that there is only a water dropper in the Prolango set, excluding the trap and hose, and consumers need to purchase it additionally.
 
At present, Prolang has production bases in Germany, Canada and Turkey, which are responsible for the European, North American and Asian markets respectively, and the products in the Chinese market are imported from abroad.