Reagent product
1, the customer in the order of chemical reagents, please confirm carefully before ordering, by the customer selection error caused by the return demand, our company does not bear any responsibility. Most of the chemicals are special in nature and complex in storage. Please keep them properly according to the storage conditions.
2, the customer after receiving the goods, please inspect the package immediately, if you find any packaging specifications, quantity, variety inconsistent, appearance damage, shortage or defects, please report the situation to our customer service department within 3 working days, our staff will promptly deal with the above problems, including return, exchange and other matters.
3, the product has a clear period of validity, in accordance with the customer in accordance with the storage conditions and the preservation of the goods are not opened during the premise, before the period of validity, our product quality to give a month guarantee period.
   The product has no clear expiration date, and the user in accordance with the storage conditions and storage conditions of the goods unopened premise, our product quality to give a one-week guarantee period.
4, for the quality of goods and delivery, if the user does not raise objections within the above specified period, it is deemed that the user has approved the product.
5, the following types of products can not be returned to our company:
   A. Including but not limited to customized products & blended products.
   B. Leakage or damage of the product caused by the customer.
   C. Products that have expired, products with missing or erased labels, parts or descriptions, cooled, frozen, and open products.
   D. Special products & Chromatographic products.
6, involving the return of products, customers need to contact our customer service staff and operate the transportation according to the relevant guidance.

Instrument and Equipment
1, customers in the order of instruments and equipment, please carefully confirm the order, by the customer selection error caused by the return demand, our company does not bear any responsibility.
2, due to the complexity of instruments and equipment models, customers purchase related products after-sales and maintenance policies are different, in accordance with the actual signed agreement.
3, in accordance with the following circumstances, the customer can apply for return within 5 working days from the date of actual receipt of the goods (customer sign or sign a single day), and can apply for replacement within 10 working days.
    （1）The functional failure specified in the national three guarantees: the failure is confirmed by the manufacturer's designated or special after-sales service center, the national level third-party testing institution, and confirmed by the inspection report.
    （2）Damaged or missing goods: verified by our customer service staff.
4、The following circumstances will not be returned or exchanged：
    （1）Customer's designated transport company to cause damage to the goods.
    （2）Any improper use and storage of products that cause quality problems.
    （3）Products that are customized, modified, and add specific words, logos, etc. to the products according to customer requirements.
    （4）Over-insured products (products that exceed the three-guarantee period).
    （5）Product quality problems caused by unauthorized maintenance, misuse, collision, negligence, abuse, fluid intake, accident, alteration, incorrect installation, or tearing or altering of labels, machine serial numbers, security marks.
    （6）Product packaging, accessories, gifts, instructions are incomplete, invoices are missing or altered.
    （7）Normal wear and tear of the product.

Consumables & Protection
1、Customers in the order of consumables, protective products, please carefully confirm before ordering, by customer selection error caused by the return demand, our company does not assume any responsibility.
2、For protection products, if customers find defects and confirm them by our company, they can apply for replacement or replacement. With respect to such products, we make no warranties, implied or otherwise, other than those expressly given by the Manufacturer.
3、No return instructions
    （1）Chromatographic column products, once used, our company will not return, exchange.
    （2）In addition to transportation, delivery caused by the damage of disposable consumables or sterilization consumables, our company will not return, exchange.
    （3）Non-disposable consumable products, glass products, plastic products, after use, our company will not return, exchange.
    （4）Glass products and sealed products, after the customer inspection and receipt, our company will not return, exchange.
    （5）Product packaging, accessories, gifts, instructions are incomplete, invoice missing or altered, our company will not return, exchange.