(1) Apply to join the government procurement supplier library through Zhejiang government pneumatic muffler procurement website (excluding the publicity period, provide Zhejiang government procurement website screenshots and other warehousing proof materials, according to the supplier's official seal).

(2) Statement of small and medium sized enterprises (the original, according to the official seal of the supplier, see Annex 1 of Part IV of the bidding document for the form)

(3) Application for qualification confirmation of small and medium-sized enterprises (original or copy, with official seal of the supplier)

(4) When participating in government procurement activities, prison enterprises shall provide prison enterprise certification documents (original or copy with official seal) issued by prison administration bureau and Rehabilitation Administration Bureau (including Xinjiang production and Construction Corps). In government procurement activities, small hole muffler prison enterprises are regarded as small and small enterprises, and enjoy the price deduction policy in the review.

(5) Statement of welfare institutions for the disabled (original, according to the official seal of the supplier, the form is shown in Annex 3 of Part IV of the bidding document). In government procurement activities, welfare institutions for the disabled are regarded as small and micro enterprises and enjoy the price deduction policy under review.

Detailed planning scheme description and commitment of after-sales service, impedance composite muffler, product quality assurance period, detailed introduction of the buyer's latest after-sales service organization, general director of the service organization, telephone number, address, technical force allocation and other service fee contents and guarantee measures outside the warranty period. According to the procurement contents, technical requirements and review methods of the bidding documents, confirm whether the other documents and materials to be provided meet the standards.