Longfeng applies quality control throughout the chemical supply process, from product specification and manufacturing source confirmation to testing, documentation, packaging, and shipment.
Longfeng confirms the applicable product grade, purity or assay, active content, concentration, formulation, physical form, particle size, appearance, moisture, pH, and other product-specific parameters before supply.
For products with customer-defined specifications, the customer's specification, formulation, sample, COA, or product reference is used as the product basis. For standard products, the applicable manufacturer specification is confirmed before order execution.
The confirmed specification is used as the reference for production, testing, packaging, and final shipment.
Longfeng supplies products through its own manufacturing activities, cooperation with Chinese manufacturers, and established supply-chain resources.
For each order, the applicable manufacturing source is confirmed according to the product specification, production status, packaging requirements, MOQ, lead time, and required documentation.
Customer-specific product and order requirements are communicated to the relevant manufacturing source before production or packing.
Testing requirements are determined according to the chemical product and the agreed specification.
Depending on the product, quality parameters may include purity, assay, active content, moisture, pH, concentration, particle size, appearance, and other product-specific testing items.
Where customers require specific testing items or acceptance criteria, these requirements are confirmed before production or shipment.
Longfeng coordinates quality and technical documents according to the product and customer requirements.
Documents may include Certificate of Analysis (COA), Safety Data Sheet (SDS), product specification, packing information, label information, and applicable export documents.
Before shipment, the available documentation is checked against the confirmed order, including product name, grade, batch or lot information, testing results, specification, packaging information, and other applicable data.
For products supplied with batch or lot information, the batch details are matched with the applicable product and quality documentation.
Batch or lot information provides a reference for connecting the supplied product, COA, and shipment documentation where applicable.
For recurring orders, the relevant product and specification requirements are reviewed against the current supply before the order is arranged.
Packaging requirements are confirmed according to the chemical product, customer requirements, and transportation conditions.
Longfeng coordinates applicable packaging formats, including bags, drums, cartons, bottles, buckets, bulk packaging, inner and outer packaging, and specified package weights.
Labeling and shipping marks can include product name, grade, net weight, batch information, customer brand, logo, storage information, country of origin, PO number, destination, and other agreed information.
Before shipment, the packaging and labeling requirements are checked against the confirmed order.
Before dispatch, Longfeng verifies the completed order against the confirmed requirements.
The final check covers product, specification, total quantity, package count, net weight, packaging, labels, shipping marks, required documents, and loading arrangements.
Customer-specific requirements confirmed during the order process are included in the final shipment preparation.