About Nuhai(Yantai)Chemical Co., Ltd - Agriculture Supplier in China

China, Yantai region, lists 22 active products across its catalogue. The items are primarily chemicals used in agricultural and textile processing, including optical brighteners, enzyme preparations, and various fabric softener flakes. Product titles such as Optical Brightener BY, Mid Temperature Alpha Amylase Enzyme, and Weak Cationic Softener Flake for Dyeing House illustrate the breadth of functional additives offered. Each entry is recorded under the Agriculture top‑category, reflecting the company's positioning in chemical inputs for crop protection and textile‑related agricultural applications. The catalogue does not provide HS codes, so classification relies on standard chemical headings in international trade.

The supplier’s inventory includes optical brightening agents for cotton, polyester, nylon and acrylic fibres, as well as cellulase and amylase enzymes for textile finishing. Softening agents appear in cationic, non‑ionic and anionic forms, tailored for denim, cotton yarn and general fabric washing. No quantitative specifications such as purity percentages or dosage rates are listed, but the product names indicate typical functional groups used in the sector.

Product Range and Specialties of Nuhai(Yantai)Chemical Co., Ltd

The listed products cover three functional groups: optical brighteners, enzymatic cleaners, and fabric softeners. Optical brighteners such as BY, NFW‑L, OB‑1 and BAC L are water‑soluble compounds that absorb ultraviolet light and emit blue fluorescence, a standard approach for improving whiteness in cotton, nylon, acrylic and plastic substrates. Enzyme offerings include mid‑temperature and high‑temperature alpha amylases, catalase, liquid acid cellulase and neutral cellulase, which are commonly employed for starch removal, oxidative bleaching and denim stone‑wash processes. Softener flakes are supplied in weak cationic, non‑ionic and low‑yellowing anionic formats, matching typical dosage levels of 0.5‑2 kg per 100 kg fabric load.

Industry practice for these categories distinguishes grades by solubility, UV absorption peaks (around 365 nm for brighteners), enzyme activity units (U/g) and pH stability ranges. For example, textile‑grade amylases are often specified at 10,000‑30,000 U/g with optimal activity between 45 °C and 60 °C. Softener flakes are evaluated by hand‑feel, residue levels (<0.1 % ash) and compatibility with conventional dyeing auxiliaries. Buyers usually request technical data sheets that list these parameters alongside recommended dosing curves.

Trade and Export Information - Nuhai(Yantai)Chemical Co., Ltd

China is a major exporter of textile auxiliaries and industrial enzymes, with shipments routinely routed to Southeast Asia, the European Union and North America. Export logistics for powdered or flaked chemicals typically use 20‑ft or 40‑ft containers, packed in moisture‑proof polyethylene bags or bulk drums, and are shipped under Incoterms such as FOB or CIF. Regulatory checks often involve the Chinese Ministry of Commerce export license, MSDS compliance, and, for destination markets, conformity to REACH (EU) or TSCA (US) chemical registration requirements. Buyers generally expect third‑party lab reports confirming optical brightener purity (often ≥ 95 %) and enzyme activity, as well as certificates of analysis that reference the relevant HS chapter 29 (organic chemicals) or chapter 38 (chemical products).

Sourcing from Nuhai(Yantai)Chemical Co., Ltd - Buyer Guidance

When sourcing from this supplier, request a current Certificate of Analysis for each chemical to verify purity, activity units (for enzymes) and any heavy‑metal limits. Samples of optical brighteners should be evaluated for fluorescence intensity using a spectrophotometer at 365 nm, while enzyme samples are tested in‑house for specific activity under the intended temperature and pH conditions. Verify that the manufacturer can provide an MSDS, REACH‑compliant registration evidence, and packaging specifications (e.g., 25 kg HDPE bags or 1 ton drums) before confirming order quantities. Confirm lead times, which for most powdered chemicals from Chinese producers range from 15 to 30 days after receipt of a pro‑forma invoice, and clarify the preferred Incoterm to align with freight forwarder capabilities.

What types of optical brighteners does Nuhai(Yantai)Chemical Co., Ltd offer?

The catalogue lists water‑soluble brighteners for cotton (BY), nylon (NFW‑L), acrylic (BAC L) and a plastic‑grade variant (OB‑1). Each is formulated to emit blue fluorescence under UV light, improving perceived whiteness.

Are enzyme products suitable for high‑temperature textile processing?

Both Mid Temperature Alpha Amylase and High Temperature Amylase are listed; the former operates optimally around 45‑55 °C, while the high‑temperature variant is designed for 70‑80 °C cycles commonly used in industrial washes.

What forms do the fabric softeners take?

Softeners are supplied as flakes in weak cationic, non‑ionic and low‑yellowing anionic formats. They are intended for direct addition to dyeing or finishing baths for cotton, denim and yarn applications.

Which documentation should a buyer request before purchase?

Buyers should ask for a Certificate of Analysis, an MSDS, and any REACH or TSCA registration proof relevant to the destination market. Test reports confirming enzyme activity or brightener fluorescence are also advisable.

What packaging options are typical for these chemicals?

Chinese exporters usually pack powdered chemicals in moisture‑resistant HDPE bags (typically 25 kg) or bulk drums (up to 1 ton). The supplier’s catalogue does not specify packaging, so clarification is required.

What are common shipment terms for these products?

Export shipments are commonly quoted under FOB Yantai Port or CIF to the buyer’s destination port. Container sizes are standard 20‑ft or 40‑ft units depending on order volume.

How can a buyer verify the purity of an optical brightener?

Purity is verified through a Certificate of Analysis that includes UV‑vis absorbance data at 365 nm and a reported purity percentage, typically ≥ 95 % for commercial grades.

What is the typical lead time for orders from this supplier?

Lead times reported for similar chemical products from Chinese manufacturers range from 15 to 30 days after order confirmation and receipt of payment documentation.