Shengyu Chemical: FAQ

A: We specialize in the R&D and export of high-quality dyestuffs (including Disperse, Reactive, Solvent, and Acid dyes) and pharmaceutical intermediates. We provide chemical solutions for the textile, leather, and pharmaceutical industries worldwide.

A: Quality is our lifeline. We have a professional QC department that tests every batch before shipment. We provide a Certificate of Analysis (COA) for every order. Also, we can send pre-shipment samples for your own testing upon request.

A: Our lab is equipped with advanced instruments including HPLC (High-Performance Liquid Chromatography), GC (Gas Chromatography), UV-Vis Spectrophotometers, and Automatic Titrators to ensure precise purity and strength analysis.

A: Yes, Zhejiang Shengyu Chemical operates under ISO 9001:2015 quality management standards, ensuring consistent product quality and standardized internal processes.

A: Yes, we usually provide 30-50g of free samples for quality evaluation.

A: Absolutely. For dyes, we offer color matching based on your samples or Pantone codes. For pharmaceutical intermediates, we provide custom synthesis and can sign Non-Disclosure Agreements (NDAs) to protect your intellectual property.

A: For pharmaceutical intermediates, the lead time for custom synthesis samples usually ranges from 3-5days, depending on the complexity of the molecular structure and the number of reaction steps.

A: Yes, we can provide larger samples (1kg to 5kg) for pilot trials at a discounted commercial price.

A: For standard dyes, the MOQ is usually 25kg (one full drum). For high-value pharmaceutical intermediates, we can accept smaller quantities like 1kg or even grams for trial orders.

A: We generally accept T/T (Telegraphic Transfer), L/C (Letter of Credit) at sight, and D/P. For long-term partners with good credit, we can discuss more flexible credit terms.

A: Due to the volatility of raw material costs and exchange rates, our quotes are generally valid for 15 days. Please confirm the price with our sales team before placing a firm order.

A: Yes, we offer competitive tiered pricing and annual rebates for customers who commit to fixed annual volumes through a framework agreement.

A: Dyes are usually packed in 25kg fiber drums, cartons, or woven bags with inner plastic lining. Pharmaceutical intermediates can be packed in specialized fluorinated bottles or drums as per chemical safety requirements.

A: Most of our dyes and intermediates have a shelf life of 24 months when stored in a cool, dry, and well-ventilated area in their original sealed packaging.

A: Yes, we provide heat-treated wooden pallets or plastic pallets that comply with international shipping regulations (ISPM 15) for easy and safe handling at the destination port.

A: Yes, we can include your internal product codes, batch numbers, and GHS-compliant warning labels as per your specific requirements.

A: Our dyes are tested according to ISO standards, including washing, light, rubbing, and perspiration fastness. Most of our disperse dyes achieve a Grade 4-5 in washing fastness.

A: Yes, we offer different series tailored for various methods. For example, our high-exhaustion series is ideal for batch dyeing, while our low-affinity series is optimized for continuous padding.

A: Most of our intermediates maintain a purity of 98% to 99%+. We can provide detailed impurity profiles and NMR/Mass Spectrum data upon request.

A: Yes, our technical team can provide recommended dyeing profiles and troubleshooting advice to help you optimize your production yield and color consistency.

A: Yes, we are committed to sustainable chemistry. Our dyes are formulated to be free of banned amines and heavy metals, meeting the requirements of ZDHC MRSL and OEKO-TEX Standard 100.

A: Yes, we provide GHS-compliant SDS in English, Spanish, Portuguese, and Chinese.

A: Yes, we strictly control our raw materials to ensure our finished products are Formaldehyde-free and APEO-free, aligning with the "Green Chemistry" requirements of global brands.

A: Yes we passed ZDHC Level-3.

A: We use UN-approved packaging and work with specialized chemical forwarders to ensure safe and compliant sea or air freight.

A: Our primary loading ports are Ningbo Port and Shanghai Port, providing convenient access to all major global destinations.

A: Yes, we can provide CO, Form E, or Form F to help you enjoy preferential import duties under various Free Trade Agreements (FTAs).

A: Yes, once the cargo is dispatched, we provide the tracking number or vessel details along with copies of the shipping documents for your monitoring.

A: Yes, we can provide neutral packaging or use your own branded labels/drums for bulk orders.

A: We welcome long-term partnerships. After a few successful trial orders, we can discuss exclusive or non-exclusive agency agreements based on market potential and performance.

A: Certainly! We welcome customers to visit our facilities in Zhejiang. Please contact us to arrange the necessary invitation letters for visas.

A: Our sales team strives to respond to all inquiries within 12 to 24 hours (working days) to ensure your project timelines are met.