request({
   url: that.url.enterprise,
   method: 'POST',
   body: builder.buildObject(ops),
   agentOptions: {
    pfx: fs.readFileSync("apiclient_cert.p12"),
    // passphrase: Buffer.from(param.mchid, 'utf8'),
    passphrase: param.mchid.toString('binary'),
    // passphrase: param.mchid
   }
  }, function(err, response, body) {
   console.log(fs.readFileSync("apiclient_cert.p12"));
   console.log(ops.mchid);
   console.log(err);
   console.log(response);
   console.log(body);
   // parseString(body, function(err, result) {
   // 	fn(that.parseWXReturnXML(result));
   // });
  });