sjar-tech has set up a r&d team with rich experience and strong technical strength, most of the practitioners have more than ten years' experience and technology in organic synthesis development, especially on the oled custom syntheis, 2-bromoindolo[3,2,1-jk]carbazole is our strong product, and we can produce it into commercial stage, its high quality and low price will be our biggest advantage.

• faq
• a : can i get some samples
• ; q : yes, we can supply the free sample, but the shipping cost be paid by customer
• a : how to confirm the product quality before placing orders
• q : we offer free sample,after you test the sample,you can know our quality.then place order.
• a : how about the quality guarantee period
• q : 24 months
• a : how do you keep reserve the products
• q : our shipping workers are very professional.they can pack various professional discreet package for hidding the products.