File modification and optical receiver shell withdrawal

The supplier shall not request to cancel or modify the negotiation response document within the negotiation validity period specified in the "pre attached table of instructions to suppliers" of field branching shell. 2.3.2 if the negotiation period needs to be extended under special circumstances, the purchaser shall notify all suppliers in writing to extend the negotiation period. If the supplier agrees to the extension, it shall not request or allow to modify or cancel its negotiation response document; if the supplier refuses to extend the time, the negotiation response document shall be invalid. 2.4 negotiation security shall not be charged. 2.5 preparation of negotiation response document. Among these conditions, the appendix to the letter of offer may be more advantageous to the purchaser on the basis of meeting the substantial requirements of the competitive negotiation document for cast aluminum waterproof junction box than the requirements of the competitive negotiation document. 2.5.2 the negotiation response document shall respond to the substantive contents involved in the competitive negotiation document, such as negotiation quotation, construction period, validity period, quality requirements, etc. 2.5.3 the negotiation response document shall be signed or sealed by the supplier's legal representative or its authorized agent. After the negotiation response document is signed by the representative, the power of attorney signed by the legal representative shall be attached. The specific requirements for signature and seal are listed in the attached table before the instructions to suppliers. 2.5.4 the electronic format of the negotiation response document is shown in the pre attached table of the instructions to suppliers. Encryption of tender documents submitted by negotiation response documents 3.1.1 electronic bidding documents uploaded on the Internet shall be authenticated and encrypted by digital certificate. Cast aluminum chassis 3.1.2 the bidder shall upload the encrypted electronic bidding document (hntf) to the designated location of member system before the deadline specified in the schedule before this chapter.